100 oz A-Mark Silver Bar

A-Mark's 100 oz Silver Bar: Six Decades of US Bullion Heritage

The 100 oz A-Mark silver bar comes from one of the longest-running names in American precious metals. A-Mark Precious Metals was founded in 1965 as "A Mark Coin Company" by Steven C. Markoff in Santa Monica, California. In 1972, the US Treasury granted A-Mark a special licence for dealing in gold, three years before private gold ownership was legalised for all US citizens in late 1974. That early institutional trust established a reputation that persists through the company's own-brand bar range today.

A-Mark is primarily a distributor rather than a pure refiner. They are an authorised purchaser for the US Mint, Royal Canadian Mint, Perth Mint, and South African Mint. Their own-brand bars represent a smaller slice of their total business than wholesale distribution, but the A-Mark hallmark on a silver bar carries recognisable heritage in the US dealer market. The 10 oz format is their signature product, though 1 oz (vintage), 10 oz, and 100 oz bars have all been produced under the A-Mark brand.

In December 2025, A-Mark rebranded as Gold.com, Inc. and transferred from NASDAQ to NYSE under the ticker "GOLD", claiming one of the most valuable domain names in the precious metals industry. This corporate rebrand does not immediately affect existing product labelling, but future production may carry the Gold.com branding. For buyers of existing A-Mark bars, the company's history, dealer network, and market infrastructure remain unchanged.

The 100 oz format delivers maximum premium efficiency in the retail silver bar market. At approximately 3.11 kg (6.86 lbs), this is a substantial physical holding representing the lowest per-ounce premium available to retail buyers outside of institutional 1,000 oz Good Delivery bars.

A-Mark 100 oz Silver Bar Specifications

The bar design is characteristically utilitarian. The A-Mark name and logo appear on the face alongside purity and weight declarations. The reverse features the distinctive repeat-pattern text: diagonal lines of "A-Mark" and ".999+ Pure Silver" repeated across the entire surface, creating a visually recognisable pattern that distinguishes A-Mark bars from competitors. No assay cards, advanced security features, or serial numbers are included; authentication relies on the hallmark, weight verification, and purity stamp.

Cast bars at the 100 oz weight typically measure approximately 140mm x 80mm x 25mm, though individual pieces may vary slightly in exact dimensions. The cast/poured production method creates a more organic surface texture than minted bars, with slightly rounded edges. This is standard for the 100 oz weight class, where most producers use casting rather than minting due to the scale of metal involved.

Tax Position for the A-Mark 100 oz Silver Bar

Standard silver bar tax treatment applies throughout. A-Mark's long institutional history and authorised purchaser status with multiple sovereign mints does not confer any tax advantages on their own-brand bars. The bars have no legal tender status.

• United States: The primary market for A-Mark products. No federal sales tax. State sales tax varies; approximately 35 states exempt investment bullion from sales tax entirely. IRA-eligible at .999 purity from a recognised manufacturer. A-Mark's status as an authorised US Mint purchaser reinforces acceptance by IRA custodians, and the company's 60-year track record provides institutional credibility.
• United Kingdom: 20% VAT on purchase. Not CGT-exempt. A-Mark bars are uncommon in the UK retail market; UK buyers would typically encounter these only through international dealers or secondary-market sources.
• Canada: GST/HST exempt at .999+ purity in bar form.
• Australia: GST-free as investment-grade silver at 99.9%+ purity.
• New Zealand: GST-exempt for fine silver at 99.9%+ purity.
• Singapore: GST-exempt under the IPM scheme at .999 purity.
• Hong Kong: No sales tax, no import duty, no capital gains tax.
• South Africa: 15% VAT. No silver exemption.
• EU: Standard VAT at national rates. A-Mark bars have minimal presence in European dealer inventories.

A-Mark: From 1965 Coin Dealer to NYSE-Listed Precious Metals Major

A-Mark's history spans the modern era of American precious metals trading and mirrors the development of the retail bullion market itself. Founded as a coin dealer in 1965, the company secured a US Treasury licence for gold dealing in 1972, establishing it as one of the first private firms permitted to trade gold commercially in the United States before the general legalisation of private gold ownership.

When private gold ownership was legalised on 31 December 1974, A-Mark was already positioned to serve a market that competitors were just entering. This head start built the institutional relationships (US Mint, Royal Canadian Mint, Perth Mint, South African Mint) that define the company today. Fiscal year sales exceeded $1 billion for the first time in 1983. By 2021, annual revenue had reached $7.6 billion, reflecting both precious metals price appreciation and market share growth.

The company went through significant corporate restructuring between 2005 and 2014. Greg Manning Auctions acquired A-Mark in 2005 for $16 million. The parent was renamed Escala Group, then Spectrum Group International, before Spectrum purchased remaining shares in 2009. In 2014, A-Mark was spun off as an independent publicly traded company. Throughout these ownership changes, the A-Mark brand and dealer relationships remained operationally continuous.

In 2017, A-Mark acquired Goldline International to expand their direct-to-consumer retail channel. The December 2025 rebrand to Gold.com, Inc., accompanied by the transfer from NASDAQ to NYSE under the ticker "GOLD", represents the most recent strategic shift. The company also maintains operations in Vienna, Austria, enabling approximately 17-hour daily trading coverage across US and European market hours.

A-Mark holds the distinction of producing the first coins struck from silver recovered from the SS Gairsoppa, a British cargo ship torpedoed by a German U-boat in 1941 while carrying silver bullion. The wreck was located in 2011 at a depth of approximately 4,700 metres off the coast of Ireland, and recovery operations completed in 2013 yielded roughly 61 tonnes of silver from the sea floor.

A-Mark vs Royal Canadian Mint and Asahi at 100 oz

In the 100 oz silver bar market, A-Mark competes against both sovereign-mint and major-refiner products. The hierarchy is structured around accreditation, brand recognition, and resulting secondary-market liquidity.

The 100 oz Royal Canadian Mint bar sits at the top of the quality and liquidity spectrum. RCM bars are .9999 fine silver (one decimal place purer than A-Mark's .999), individually serialised, and backed by the Canadian government with LBMA Good Delivery listing. They command the highest premiums in the 100 oz category but also achieve the tightest buyback spreads globally. For buyers who prioritise liquidity and provenance above minimising acquisition cost, RCM is the established standard.

The 100 oz Asahi bar offers LBMA-accredited provenance at moderate premiums. Asahi inherited Johnson Matthey's precious metals refining infrastructure in 2015 and produces bars recognised by dealers worldwide without additional verification. The LBMA accreditation provides an international resale advantage that A-Mark (as a distributor rather than an accredited refiner) cannot match.

Vintage Engelhard 100 oz bars and Johnson Matthey 100 oz bars occupy a collector niche: no longer in production, they carry premiums above melt value from bar collectors. A-Mark vintage bars from the 1980s carry modest collector interest but not at the same level as Engelhard or JM pieces, which have larger and more active collector communities.

A-Mark's practical advantage is availability at competitive premiums within the US dealer network. For domestic US buyers who intend to sell through major US dealers (JM Bullion, APMEX, SD Bullion), the A-Mark hallmark is recognised and accepted at standard spreads. For international resale or situations where the buyer cannot predict which dealer or market they will eventually use, the RCM or Asahi bars offer more universally portable provenance.