1 oz silver bar - JM blank back
Updated September 7, 2026
| Lot number | 684 |
| Category | Coins & Currency |
| Auction | Tax free Gold/Silver starting at $5 over spot!! |
| Date | September 13, 2026 at 7:00 PM EDT |
| Auction house | All-Star Auction House |
| Location | Hamilton |
Produced by the world-renowned refiner Johnson Matthey, the 1 oz Johnson Matthey Blank Back Silver Bar is a highly collectible vintage classic containing .999 fine silver. The obverse features the iconic "JM" initials alongside the crossed hammers mint mark framed inside a rectangle, clearly stamped with "JOHNSON MATTHEY," "ASSAYERS & REFINERS," "FINE SILVER 999," "1 OUNCE TROY," and a unique individual serial number at the base. True to its name among numismatists and vintage silver collectors, the reverse is intentionally left plain with a smooth, unadorned blank surface—a distinct contrast to the repeating diagonal logo pattern seen on standard releases. As Johnson Matthey ceased production of commercial bullion bars in 2015, this secondary-market piece stands out as a scarce, historical vintage bar highly sought after by silver stackers and serious collectors alike.
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