Spectrum Group International, Inc. engages in collectible business conducted through auctions or merchant and dealer transactions. The company is headquartered in Costa Mesa, California. The firm is a trader of precious metals and an auctioneer of coins and wine serving both collectors and dealers. The firm's collectibles offerings span the price from modest to ultra-high end. The firm also offers loans to coin dealers, collectors and investors collateralized by their precious metals, rare coins and other collectibles. The firm operates in two segments: Trading and Collectibles. Its Trading business is conducted through A-Mark Precious Metals, Inc. (A-Mark) and its subsidiaries. The firm's Collectibles business operates as an integrated network of companies concentrating on numismatic (coins), paper currency, and rare and fine vintage wine. The firm is also a merchant/dealer of certain collectibles.