| EXAMPLE | OBVERSE | REVERSE | COMMENTARY | KNOWN
WEIGHT
CLASS | KNOWN
SERIAL
NUMBERS
| ESTIMATED
MINTAGE |
 | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [925 FINE]
[Weight Class] [OZS.] | Pressed Finish | 1oz class bar produced by Arizona Assay Office. This are a very thin and sheet-like bar. | .86oz
| 76 [.925 FINE]
| <5 |
 | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] | 999 FINE | Approximate 1oz class ingot produced by Arizona Assay Office. The example pictured weights 33g. | 1.06oz | Serial Absent | <5 |
 | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999 FINE] | Cast Finish | 1oz class ingot produced by Arizona Assay Office. Ingots B101 and B104 have the weight and purity stamps on the reverse of the ingot. | 1.87oz
1.90oz | B101 [.999 FINE]
B104 [.999 FINE] | <5 |
  | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [.999 FINE] [Weight Class] [OZS.] [Serial Number] | Cast Finish | 1oz class ingot produced by Arizona Assay Office in .999 purity. | 1.71oz
| 356 [.999 FINE]
| <5 |
  | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] | Cast Finish | Approximate 2oz class ingot produced by Arizona Assay Office. This unique piece measures approximately two inches in width by approximately one inch in height. It lacks purity, weight and serial number assignment stampings. | 2.49oz | Serial
Absent | <5 |
  | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999] [FINE] [Weight Class] [OZS] [Serial Number] | Cast Finish | Approximate 3oz class ingot produced by Arizona Assay Office with occasional serial number ‘B’ or ‘S’ prefix and ‘S’ suffix on the purity stamp. Note the varying purity noted in the serial number examples column.
Ingot 999 demonstrates supplemental weight stampings on the reverse as shown below, and sold via eBay auction on October 15, 2019.
 | 2.88oz
3.13oz
3.29oz
3.37oz
3.42oz
3.42oz
3.52oz
3.58oz
3.61oz
3.62oz
3.67oz
3.69oz
3.76oz
3.79oz
3.83oz
3.86oz
3.87oz
3.89oz | 999 [.925]
1101 [.999]
1099 [.999]
1058 [.999]
1074 [.995]
1190 [.999S]
1221 [.999S]
1027 [.999]
1066 [.999]
1045 [.999]
S454 [.999]
B1427 [.900]
S456 [.999]
1220 [.999S]
1059 [.999]
1072 [.999]
1075 [.9995]
1068 [.999]
| <50 |
 | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999] [C] [FINE] [Weight Class] [OZS.] [Serial Number] | [Letter ‘C’ repeated seven times] | Approximate 3oz class copper ingot produced by Arizona Assay Office. Note the ‘C’ designation on the obverse and reverse, denoting the copper composition. Likely a prototype example, the casting mould measures wider from left to right and is shallower than its silver ingot counterparts. | 2.67oz | 103 [.999] | <5 |
 | [Weight Class] [OZS] [s925] [FINE] [Serial Number] [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] | Cast Finish | Approximate 3oz class ingot produced by Arizona Assay Office in exceedingly rare portrait variation and .925 purity. This example is quite unique in that it appears to have been stamped on the reverse vs. obverse as observed on other Arizona Assay Office ingots. | 3.75oz | 104 [.925] | <5 |
      | [Double or Single Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999] [FINE] [Weight Class] [OZS] [Serial Number] | Cast Finish | Approximate 5oz class ingot produced by Arizona Assay Office with occasional serial number ‘M’ prefix or serial number ‘B’ suffix. Some examples also include an ‘S’ prefix or suffix on the purity stamp. Observed in either single or double circular Arizona Assay Office hallmark and in varying purity. Ingot 1031 sold via auction in May, 2019 for $2,225.00. Note the casting mould size difference between many of these ingots, as demonstrated in the photo below.
| 4.20oz
4.24oz
4.35oz
4.68oz
4.72oz
4.74oz
4.73oz
4.79oz
4.80oz
4.89oz
4.92oz
5.11oz
5.29oz
5.30oz
5.34oz
6.14oz
6.94oz | 1076 [.9995]
1031 [.999]
1082 [.9995]
1150B [.925]
1163 [.925]
1087 [.9995]
1081 [.9995]
1109 [.999]
1160S [.925]
1179 [S.999]
1005 [.999]
M21 [.720]
1146B [.925]
1114 [.999]
M22 [.720]
1011 [.925]
1180 [.999S] | <50 |
 | [Single Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [900] [FINE] [Weight Class] [OZS] [Serial Number] | [Weight Class] [FINE] | Approximate 5oz class ingot produced by Arizona Assay Office with serial number ‘S’ prefix and 5.12oz weight stamp on the reverse for actual fine silver content. | 5.12oz | S1427 [900] | 1 |
  | [Single Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999S] [FINE] [Weight Class] [OZS] [Serial Number] | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] | Approximate 5oz class ingot produced by Arizona Assay Office. Note the single circular outline on the obverse Arizona Assay Office Hallmark and the double circular outline on the reverse. | 6.38oz | 1206 [.999S] | 1 |
  | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999] [FINE] [Weight Class] [OZS] [Serial Number] [Custom Flower Stamp] | [★ A.M.CO. ★] [★ 999 ★] | 5oz class ingot produced by Arizona Assay Office. Similar to our example above, but includes A.M.CO. counterstamp on the reverse. This is the only known even 5oz ingot in this weight class and we believe at this time that the A.M.CO. reverse counterstamp was applied at the time of production. | 5.00oz | 499 [.999] | 1 |
 | [SILV.] [Single Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999] [FINE] | Cast Finish | Approximate 5oz class ingot produced by Arizona Assay Office in exceedingly rare portrait variation. | 4.76oz | Serial
Absent | 1 |
 | [999] [FINE] [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [AN. CO.] [GR 164] | [57] | Approximate 5oz class copper/silver alloy ingot produced by Arizona Assay Office. This unique bi-metal ingot assay tested at 50% pure copper and 50% fine silver. We have confirmed that Arizona Assay Office was contracted to refine copper and silver for the Copper Gossan Claim Group in 1965. It is of the same casting mould as ingots 4.89oz #1179 and 6.94oz #1180. Ingot PD 57 sold via eBay auction on December 13, 2019 for $2,733.50. A sizing comparison is provided in the photos for similar ingot PD 60 directly below. | 5.27oz | 57 | 1 |
 | [999] [FINE] [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [PD] [60] | Cast Finish | Approximate 5oz class copper/silver alloy ingot produced by Arizona Assay Office. Similar to our entry directly above, this bi-metal ingot assay tested at 50% pure copper and 50% fine silver. We have confirmed that Arizona Assay Office was contracted to refine copper and silver for the Copper Gossan Claim Group in 1965. It is of the same casting mould as ingots 4.89oz #1179 and 6.94oz #1180. A sizing comparison is provided in the photos below.
   | 5.04oz | PD 60 | 1 |
 | [Double Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999 FINE] [Weight Class] [OZS.] [Serial Number] | Cast Finish | Approximate 6oz class ingot produced by Arizona Assay Office with double circular outline on the Arizona Assay Office Hallmark. This ingot is of a unique casting mould and sold via auction in May, 2019 for $3,643.95. | 6.17oz | 1041 [.999] | <5 |
   | [Single Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [999] [FINE] [Weight Class] [OZS] [Serial Number] | Cast Finish | Approximate 10oz class ingot produced by Arizona Assay Office. Note the single circular outline on the Arizona Assay Office Hallmark. | 9.21oz
10.43oz
| S518 [.999]
S516 [.999]
| <5 |
 | [Single Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [S963] [FINE] [G] [Weight Class] [OZS] | Cast Finish | Approximate 10oz class ingot produced by Arizona Assay Office. Note the single circular outline on the Arizona Assay Office Hallmark and the ‘G’ prefix on weight class stamp. This ingot does not include a serial number. | 11..57oz | Serial
Absent
[.963] | 1 |
  | [Single Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [925] [FINE] [Weight Class] [OZS.] [Serial Number] | [Weight Class] [FINE] [OZS.] | Approximate 15oz class ingot produced by Arizona Assay Office. Note the single circular outline on the Arizona Assay Office Hallmark and 14.52oz weight stamp on the reverse for actual fine silver content. | 14.52oz | S1176 [.925] | <5 |
  | [Single Circular Arizona Assay Office Hallmark] [★ ARIZONA ★ ASSAY OFFICE] [Outline of Arizona] [REG No. 5479] [Serial Number] [999+] [FINE] [OZS.] [Weight Class] | Cast Finish | 20oz class ingot produced by Arizona Assay Office, largest known weight class from this refiner. Note the single circular outline on the Arizona Assay Office Hallmark. This ingot is the largest known weight class and is the only Arizona Assay Office piece known to include a ‘+’ after the purity stamp and demonstrate a leading zero serial number. There is a C. Rhyne hallmark over-stamped on Arizona Assay Office hallmark, pictured below. This ingot is understood to have at one time been a part of the Craig Rhyne & associates precious metals holdings.
 | 20.00oz | 0385 [.999+] | <5 |
