Spectrum Group International
Financial ServicesCalifornia, United States51-200 Employees
Spectrum Group International is a global trading and collectibles network based in Irvine, California. The company operates as a trader of precious metal products—such as gold, silver, platinum, and palladium—and as an auctioneer of coins, complemented by lending services that collateralize loans with precious metals, rare coins, and other collectibles. Its activities encompass a wholesale bullion marketplace through A-Mark Precious Metals and financing via Collateral Finance Corporation, which serves bullion and numismatic products and operates as the Official Numismatic Lender of the American Numismatic Association. Spectrum Group also maintains a collectibles arm focused on rare coins and currency through Stack's Bowers Galleries, including online and wholesale channels. The organization targets coin dealers, collectors, and investors seeking liquidity, access to scarce numismatic items, and structured financing tied to tangible assets. Based in southern California, the firm functions across multiple facets of the financial services and numismatic markets, reflecting its role as a diversified participant in precious metals trading, coin auctions, and asset-backed lending.
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