Arizona Assay Office

Arizona Assay Office bars are highly collectible vintage silver bars, produced by Jack Stone in the late 1960’s. Although distributed by Paul Franklin, they were actually not a part of the infamous “Franklin Hoard” of counterfeit/reproduction bars that appeared around the same time. There are only 80 estimated pieces in existence.

  • Company Location(s): Arizona, Southwest Refiners
  • Dates of Operation: 1969
  • Known Bar Sizes: ~1, ~3, ~5, ~10, ~15, ~20
  • Related Refiners: Yellow Daisy Refining Company

Bars by

Arizona Assay Office

Arizona Assay Office 8.88 Front

Arizona Assay Office 8.88

Arizona Assay Office

  • Metal: Silver
  • Weight Class: ~10
  • Specific Weight: 8.88
  • Shape: Rectangle
  • Configuration: Horizontal
  • Type: Poured
  • Est. Mintage Date: 1960's, 1969
  • Occurrence Frequency: Unobtainable
  • Misc.: Grail Bar
  • Contributed by: D H