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AG | 1/2 KILO | KILO


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ENGELHARD
is pleased to welcome visitors to our Johnson Matthey 1/2 KILO and KILO Definitive Page. While our focus is clearly Engelhard, we recognize that many Engelhard bullion collectors also collect Johnson Matthey bars and ingots. As such, we appreciate the opportunity to present important bullion information on the world’s second most collectible refiner, Johnson Matthey. We hope you welcome this new addition, and we look forward to your thoughts and input!

Our Definitives, below, are organized in presentation of Half Kilo weight class first, followed by Kilo examples. For each weight class, our order of examples is presented by region of origin: United States, Canada, London, Brussels and Australia. Also note that our Definitives reflect what we believe to be the earliest examples first, followed by more recent production examples.

IMAGEWEIGHT CLASSOBVERSEREVERSECOMMENTARYSAMPLE SERIAL NUMBERSESTIMATED MINTAGE
Half Kilo JM Pressed½ KILO[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [½ KILO] [Serial Number][JM Crossed Hammers Logo Repeated Five Full Times]½ KILO pressed example produced by Johnson Matthey, United States.000079
000109
001252
001979
002080
002406
002425
<3,000
1:2KILO JK1/2 KILO[Diamond JM Logo with Crossed Hammers] [½ KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish½ KILO example produced by Johnson Matthey, Canada.Serial
Absent
<1,000
500G JM500g[Diamond JM Logo with Crossed Hammers] [500 G] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish500g example produced by Johnson Matthey, Canada.
Serial
Absent
<1,000
JM_500g_S010858500g[JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Left] [500g] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish500g example produced by Johnson Matthey, Canada. Originally issued in a blue commemorative dust jacket.S010858
S011729
<2,000
JMM HALF KILO Canada1/2 KILO[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1/2 KILO] [999] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1/2 KILO example produced by Johnson Matthey & Mallory, Canada.Serial Absent<2,000
500 grammes JM London 500g
[JOHNSON MATTHEY LONDON Oval Logo] [Mining Tool Logo Inner Oval] [500 grammes] [SILVER BULLION] [999] [Serial Number]Blank500g pressed example produced by Johnson Matthey, London.  Originally issued in presentation case, pictured below.
unnamed-1
HK11088
HK12781
HK12782
HK12802
HK12835
<1,000
500g SILVER JUBILLE JM500g[World Map Silver Jubilee Logo] [Presented by C.E. Heath & Co Ltd on the occasion of the SILVER JUBILEE of H M Queen Elizabeth II] [1977][500 grammes] [- 999 PURE SILVER-] [JMM Hallmark]500g Silver Jubilee commemorative bar produced by Johnson Matthey & Mallory, London. Originally issued in a velvet lined presentation box.Serial Absent<1,000
Screen Shot 2016-05-17 at 8.55.21 AM500g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/00]Blank, with a border.  This particular example was engraved in 1990.500 gram MP example produced by Johnson Matthey, Italy.  Originally issued in presentation case, pictured below.unnamed-3Serial Absent<50
Screen Shot 2016-05-17 at 8.49.05 AM500g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/00][MP Diamond Logo] [500 GRAMMI] [FINE SILVER] [999.0] [MADE IN ITALY]500 gram MP example produced by Johnson Matthey, Italy.  Originally issued in presentation case, pictured below.
unnamed-2
Serial Absent<50
500GRAMME JM500g[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [Serial Number] [500GRAMME]Cast Finish500g example produced by Johnson Matthey, London.J20010<100
JM 500g London500g[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [SILVER] [Serial Number]
Blank500g example produced by Johnson Matthey, London.JM2045 A<500
JM 500g LONDON500g[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [J M C] [Serial Number] [JOHNSON MATTHEY ASSAY OFFICE Oval Logo] [Mining Tool Logo Inner Oval] [FINE SILVER]
Blank500g example produced by Johnson Matthey, London.7520 A<500
JM Barclays Half KiloHALF KILO[BARCLAYS Logo] [BARCLAYS] [FINE SILVER 999] [HALF KILO] [JOHNSON MATTHEY LONDON Oval Logo] [Mining Tool Logo Inner Oval]BlankHALF KILO example produced by Johnson Matthey, London, for Barclays.
Serial Absent<500
photo500g[JOHNSON MATTHEY & PAUWELS Oval Logo] [BRUXELLES BRUSSEL Inner Oval] [999] [500.]Cast Finish500g example produced by Johnson Matthey & Pauwels, Brussels.Serial Absent<500
JM MG .497Kg497g g[.497Kg] [MG Matthey Garrett Circular Hallmark] [.999]Cast Finish497 example produced by Matthey Garrett, Australia, in rare serial absent variation.  Note the larger purity designation font.Serial Absent<100
MG 502g Australia502g[W&H Flag Logo] [MG Matthey Garrett Circular Hallmark] [502 Gm] [Serial Number] [•999]Cast Finish502g example produced by Matthey Garrett, Australia. Interestingly, the W&H flag represents Walker & Hall of Sheffield, England, pictured below.
44-09
162<500
501g MG JM501kg[MG Matthey Garrett Circular Hallmark] [.501Kg] [Serial Number] [•999]Cast Finish501kg example produced by Matthey Garrett, Australia.97<500
IMG_2057
500kg
[MG Matthey Garrett Circular Hallmark] [•500Kg] [•999]Cast Finish500kg example produced by Matthey Garrett, Australia, in rare serial absent variaiton.Serial Absent<500
MG 507g Australia507g[MATTHEY GARRETT Oval Logo] [FINE SILVER 99•9% MIN.] [507 grams]Cast FinishApproximate 500g example produced by Matthey Garrett, Australia.  Demonstrates a rectangular-shaped casting mould.Serial
Absent
<1,500
SSS JM 003 copy496g[MATTHEY GARRETT Oval Logo] [FINE SILVER 99•9% MIN.] [496 grams]Cast FinishApproximate 500g example produced by Matthey Garrett, Australia.  Similar to our above example but demonstrates a more squarely-shaped casting mould.Serial Absent<500
JM 501g501kg[JM Mining Tool Logo] [999+] [•501Kg] [W&M Flag Logo] [Serial Number]Cast Finish501kg example produced by Johnson Matthey, Australia. Interestingly, the W&H flag represents Walker & Hall of Sheffield, England, pictured below.
44-09
892<500
0.5 kg JM Australia Early.5kg[JOHNSON MATTHEY Oval Logo] [0.5 kg] [999+SILVER]Cast Finish.5kg example produced by Johnson Matthey, Australia.Serial Absent<500
Dot 5 KILO JM.5kg[JOHNSON MATTHEY Oval Logo] [.5 KG] [999+SILVER]
Cast Finish.5kg example produced by Johnson Matthey, Australia.Serial Absent<1,000
Dot 5 KILO JM Australia.5kg[JOHNSON MATTHEY Oval Logo] [.5 KILO] [999+SILVER]Cast Finish.5kg example produced by Johnson Matthey, Australia.Serial Absent<1,000
Screen Shot 2017-01-16 at 3.14.00 PM1000g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/00][MP Diamond Logo] [1000 GRAMMI] [FINE SILVER] [999.0] [MADE IN ITALY]1000 gram MP example produced by Johnson Matthey, Italy.  Serial Absent

<50

JM KILO New1 KILO[JOHNSON MATTHEY SLC Oval Logo] [999 Inner Oval] [1 KILO] [Serial Number]Cast Finish1 KILO example produced by Johnson Matthey, United States. This is the most recently produced kilo and is no longer in production.000011
001493
002955
009323

<25,000

1-Kilogram (kg, kilo) Johnson Matthey Silver Bar, No Company Name, Poured, Obverse1 KILO[Diamond JM Logo with Crossed Hammers] [1 KILO] [Serial Number] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey, Canada.

12003A
12528D
12806D
13187D
13305D

<2,000
unnamed1 KILO[Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey, Canada.  Similar to our above example but lacks a serial number.

Serial
Absent

<250
image-41 KILO[Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey, Canada.  Similar to our above example but demonstrates a different weight class font.

Serial Absent

<50
unnamed-11 KILO[Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey, Canada.  Similar to some of our above examples but demonstrates a different weight class font.

Serial
Absent

<250
JM_1Kilo_D0147371kg[Diamond JM Logo with Crossed Hammers] [1 Kg] [Serial Number Sideways on Right] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1kg example produced by Johnson Matthey, Canada. Similar to above example with exception of opposite serial number placement and ‘1 Kg’ vs. ‘1 KILO’ weight class designation

D014737

<2,000
1KILO_JM_Serial_Absent1 KILO[Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey, Canada.

Serial Absent

<2,000
unnamed1 KILO[Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey, Canada.  Similar to our above example but demonstrates a weight font that is slightly narrower and taller.

Serial Absent

<250
1 KILO JM LATER1kg[JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Left] [1 Kg] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1kg example produced by Johnson Matthey, Canada.

D016793

<2,000
JM_1Kilo_D0217981 KILO[JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Left] [1 KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey, Canada.D018291 D019103 D021798<3,000
image1 KILO[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [Serial Number] [999] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey & Mallory, Canada.  Reportedly a special pour that was distributed to selected employees.  Note the unique purity font is shared with the early ½ kilo Canadian production example.0007<25
1 KILO JMM No Maple1 KILO[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [9990] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey & Mallory, Canada.Serial Absent<1,000
IMG_44331 KILO[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [JM Maple Leaf Logo] [1 KILO] [9990] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey & Mallory, Canada.  Similar to our above example but includes the Maple Leaf logo.Serial Absent<100
unnamed-11 KILO[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [JM Maple Leaf Logo] [1 KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey & Mallory, Canada.Serial Absent<100
unnamed1 KILO[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1 KILO example produced by Johnson Matthey & Mallory, Canada.  Similar to our above example but lacks the Maple Leaf logo.Serial
Absent
<250
1 KILO JMM Corner Maple1 KILO[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [999+] [JM Maple Leaf Logo] Cast Finish1 KILO example produced by Johnson Matthey & Mallory, Canada.Serial Absent<1,000
JM KILO LARGE HALLMARK1 KILO[JOHNSON MATTHEY LONDON Large Logo] [REFINERS MELTERS Inner Oval] [999] [1 KILO] [SILVER]Cast Finish1 KILO example produced by Johnson Matthey, London. Ingot demonstrates the earlier, larger hallmark.Serial Absent<1,000
1 KILO JM LONDON J100621 KILO[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [Serial Number]Cast Finish1 KILO example produced by Johnson Matthey, London. Ingot demonstrates the modern, smaller hallmark.J 10062<500
unnamed1 KILO[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO]Cast Finish1 KILO example produced by Johnson Matthey, London. Ingot demonstrates the modern, smaller hallmark.  Similar to our above example but lacks a serial number.Serial Absent<50
1 KILO JM LONDON EARLY1 KILO[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [Serial Number]Cast Finish1 KILO example produced by Johnson Matthey, London.
JM 46311A
JM 65200 A
JM 78971 A
<1,000
1 KILO JM London Sharpd Pixley1 KILOJOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [SHARPS PIXLEY LONDON Circular Counterstamp] [Serial Number]Cast Finish1 KILO example produced by Johnson Matthey, London, for bullion broker Sharps Pixley.JM 66205 A
JM 66237 A
<250
JM 1 KILO Rood1 KILO[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [ROOD Logo] [Serial Number]Cast Finish1 KILO example produced by Johnson Matthey, London, for ROOD.JM 67840 A<100
1 KILO JM London1 KILO[JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [999] [1 KILO] [SILVER] [Serial Number]Cast Finish1 KILO example produced by Johnson Matthey, London. These examples have serial numbers which include a JM [Johnson Matthey] prefix and include a letter suffix designation.JM 66436 A
JM 73079 A
<5,000
JM_1Kilo_NoSerial_London1 KILO[JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [999] [1 KILO] [SILVER]Cast Finish1 KILO example produced by Johnson Matthey, London. Serial absent variation of our above example.Serial
Absent
<250
JM KILO SHARPS PIXLEY1 KILO[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [SP Sharps Pixley Counterstamp] [Serial Number]
Cast Finish1 KILO example produced by Johnson Matthey, London. More modern JM hallmark and also includes Sharps Pixley counterstamp.
JM 81171 A<100
unnamed1 KILO[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [LEU BANK ZURICH Counterstamp] [Serial Number]Cast Finish1 KILO example produced by Johnson Matthey, London. More modern JM hallmark and also includes LEU Bank Zurich counterstamp.JM77074<100
32.08oz JM London32.08oz[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [SILVER] [Serial Number]Cast Finish32.08oz example produced by Johnson Matthey, London.JM 13632 A
JM 13633 A
JM 13637 A
JM 13640 A

<250
1_KILO_Extruded1 KILO[JOHNSON MATTHEY LONDON with JM Crossed Hammers Logo] [1 KILO] [SILVER BULLION] [999] [Serial Number]Blank1 KILO pressed example produced by Johnson Matthey, London.KG11096
KG11727
KG12059
<500
FullSizeRender1 KILO[JOHNSON MATTHEY & PAUWELS Oval Logo] [999] [1000]Cast FinishEarly variety approximate 1000g example produced by Johnson Matthey & Pauwels, Brussels.Serial Absent<100
1-Kilogram (kg, kilo) Johnson Matthey & Pauwels Silver Bar, Poured, Obverse1000g[JOHNSON MATTHEY & PAUWELS Oval Logo] [BRUXELLES BRUSSEL Inner Oval] [999] [1000.]Cast Finish1000g example produced by Johnson Matthey & Pauwels, Brussels. Also found in other approximate weight class variations such as 999g and 1002g.
Serial
Absent
<250
Screen Shot 2017-03-20 at 2.05.56 PM1 KILO[JOHNSON MATTHEY & PAUWELS Oval Logo] [BRUXELLES BRUSSEL Inner Oval] [999] [1977] [1000]Cast FinishApproximate 1000g example produced by Johnson Matthey & Pauwels, Brussels in landscape variation.Serial Absent<100
unnamed-11kg[JOHNSON MATTHEY Oval Logo] [1 KG] [999+SILVER]Cast Finish1kg example produced by Johnson Matthey, Australia.Serial Absent<250
unnamed1kg[JOHNSON MATTHEY Oval Logo] [1.KG] [999+SILVER]Cast Finish1kg example produced by Johnson Matthey, Australia.  Similar to our above example but includes a ‘.’ between ‘1’ and ‘KG’.Serial Absent<100
IMG_5283.JPG
IMG_5284.JPG
1kg[Custom ‘elecraft’ Logo] [1 KG] [999+SILVER][JOHNSON MATTHEY Oval Logo]Exceedingly rare 1kg example produced by Johnson Matthey, Australia for Elecraft company.  Elecraft is currently one of Australia’s largest electrical contractors.  One known example.Serial Absent<50
JM AUSTRALIA 1.004 kg1•004kg[FINE SILVER 99•9% MIN.] [JOHNSON MATTHEY LTD AUSTRALIA REFINERS Oval Logo] [1.004 Kg]Cast Finish1.004kg example produced by Johnson Matthey Ltd., Australia. Seen in approximate 1kg weight class.Serial Absent<500
1.003Kg Matthey Garrett1.003kg
[FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1.003 Kg]Cast Finish1.003kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class.Serial Absent<1,000
1.008 Kg JM1.008kg[FINE SILVER 99•9% MIN.] [JOHNSON MATTHEY Oval Logo] [1.008 Kg]Cast Finish1.008kg example produced by Johnson Matthey, Australia. Seen in approximate 1kg weight class.Serial
Absent
<1,000
IMG_20591.005kg[FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1.005]Cast Finish1.005kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class, this particular variety does not demonstrate the ‘kg’ weight designation suffix.Serial Absent<1,000
1.005kg_JM1.005kg[FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1•005 kg]Cast Finish1.005kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class.Serial Absent<1,000
1.004 KG JM1.004kg[FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1•004 KG]Cast Finish1.004kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class.Serial Absent<500
Matthey Garrett 1Kg SCCC <!--mep-tab-->  11.003kg[FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1.003 kg]Cast Finish1.003kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class.  This example demonstrates the SCCC [Southern Cross Coins & Commodities ] counterstamp.Serial Absent<200
unnamed2-x-1kg-mg-rare-silver-bars-3.996KG

1.002KG
[MG Oval] [•996KG] [999] [Serial Number]

[Serial Number] [MG Oval] [•999] [1•002KG]
Cast FinishApproximate 1kg example produced by Matthey Garrett, Australia. Seen in several variations of stamp placement and some examples lack a serial number.85
124
<200
2-x-1kg-mg-rare-silver-bars-41.002Kg[MG Oval] [•999] [1•002Kg]Cast Finish1.002kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class.  This example varies slightly from the one above due to smaller MG hallmark, purity stamp font, Kg vs. KG weight designation and lack of serial number.Serial Absent<200
20170529_1621081.002Kg[W&M Flag Logo] [MG Oval] [1•002Kg] [Serial Number] [•999] Cast Finish1.002kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class and similar to our example above but includes a serial number and the the W&H flag logo. The flag represents Walker & Hall of Sheffield, England, pictured below. 
44-09
810<50