10 oz silver bar - Johnson Matthey

Updated August 11, 2026

Lot number	352
Category	Coins & Currency
Auction	August Supersale on Gold/Silver
Date	August 16, 2026 at 7:00 PM EDT
Auction house	All-Star Auction House
Location	Hamilton

The 10 oz Johnson Matthey (JM) Silver Bar is a highly coveted, vintage bullion piece that carries immense prestige and a substantial collector premium. Produced by the legendary British refiner Johnson Matthey—whose pedigree dates back to 1817 before its refining assets were acquired by Asahi in 2015—these bars are no longer manufactured, making them increasingly scarce on the secondary market. Struck in 10 troy ounces of .999 fine silver, the obverse features a classic, no-frills portrait layout displaying the iconic JM logo stamped alongside the crossed-hammers pickaxe emblem, the weight, purity, and a unique, individual serial number ensuring its pedigree. The reverse typically boasts a clean, textured pattern of diagonally repeating JM logos, though some rarer vintage variations feature a smooth, blank back. Highly liquid and universally recognized by stackers and numismatists alike, this 10 oz bar represents a perfect intersection of physical wealth preservation and historical investment-grade collectibility, making it a standout highlight for any premium auction catalog.

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