Spectrum Group International, Inc.
18061 Fitch, Irvine, CA 92614 USA, (949) 955-1250 T (949) 567-1360 F

Spectrum Group is a consolidated global collectibles network. The Company is a leading auctioneer of stamps, coins, arms, armor and militaria, and other memorabilia, targeting both collectors and dealers. Spectrum Group is also a merchant/dealer of certain collectibles and trader of precious metals. The Company's collectibles offerings span the modest to ultra high-end price spectrum. Spectrum Group conducts its operations in two business segments: collectibles and trading.

Spectrum Group’s collectibles companies focused on philately are auction houses H.R. Harmer of Irvine, California, Corinphila Auktionen of Zurich, Switzerland, Heinrich Köhler Auktionshaus of Wiesbaden, Germany, and John Bull Stamp Auctions, Ltd of Hong Kong. Spectrum Group’s collectibles companies in the numismatics field include Bowers and Merena Auctions (rare coin and currency auction house), Ponterio & Associates (world and ancient coins and currency auction house), Teletrade (online coin auctions) and Spectrum Numismatics International (wholesale rare coin dealer), all based in Irvine, California. Spectrum Group also owns Greg Martin Auctions, which is engaged in the sale by auction of arms, armor and militaria, and will shortly be expanding into wine auctions.

The trading activities of Spectrum Group are conducted through
A-Mark Precious Metals, one of the largest private sellers of bullion coins and bullion gold, silver and platinum to the wholesale marketplace. A-Mark’s subsidiary Collateral Finance Corporation, which is the Official Numismatic Lender of the American Numismatic Association, provides financing on a wide array of bullion and numismatic products.