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A-Mark Precious Metals
California, USA | 1965 | 80% Stake
www.amark.com
Founded in 1965, A-Mark has grown into a full service precious metals trading company offering a wide array of products and services. Our products include gold, silver, platinum and palladium, distributing for many Government Mints throughout the world.
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Collateral Finance Corporation
California, USA | 2005 | 100% Stake
www.cfccoinloans.com
Collateral Finance Corporation (CFC) offers precious metals financing on a wide array of bullion and numismatic products, including rare coins as well as other collectibles.
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Corinphila Auktionen
Zurich, Switzerland | 1925 | 100% Stake
www.corinphila.ch
Corinphila Auctions AG is the oldest stamp auction house in Switzerland. The first Corinphila stamp auction took place in 1925 in Zurich under the name of the founding family of Eduard Luder-Edelmann and over the past 85 years has auctioned off some of the most important stamp collections in Europe under the leadership of Karl Louis.
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Corinphila Veilingen
Amsterdam, The Netherlands | 2010 | 100% Stake
www.corinphila.nl
A sister company to Corinphila in Switzerland, Corinphila Velingen continues in the tradition with three live stamp auctions each year under the leadership of Gerard Garritsen, held in Amstelveen, The Netherlands
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HR Harmer
California, USA | 1940 | 100% Stake
www.hrharmer.com
H.R. Harmer was founded in 1940 by Henry R Harmer, a signatory of the exclusive “Roll of Distinguished Philatelists” and is a live auctioneer of rare stamps and covers under the leadership of Tom Mills based in Irvine, California.
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Heinrich Köhler
Wiesbaden, Germany | 1913 | 100% Stake
Heinrich Koehler is the oldest stamp auction house in Germany and one of the most respected in the world. Their regular sales in Wiesbaden, Germany contain single rarities, collections and covers under the leadership of Dieter Michelson.
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John Bull Stamp Auctions
Hong Kong | 1975 | 100% Stake
www.jbull.com
John Bull Stamps Auctions Ltd. is a full service auction firm, which conducts regular public auctions of stamps, coins and paper money in Hong Kong three times a year, under the leadership of Philip Y.C. Cheng.
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Spectrum Numismatics International
California, USA | 1991 | 100% Stake
www.spectrumcoins.com
Spectrum Numismatics International is one of the largest collectibles firms in the world, specializing in the purchase of rare coins, currency and fine wines.
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Spectrum Wine Auctions
California, USA | 2009 | 100% Stake
www.spectrumwine.com
Launched in 2009, Spectrum Wine Auctions is the world’s newest live and online auction house of fine collectible wine. In their first nine months of operation, the company has conducted three major live auctions broadcast between California and Hong Kong, which featured selections from the Aubrey McClendon collection.
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Stack's Bowers Galleries
California, USA | 2011 | 51% Stake
www.stacksbowers.com
Stack's Bowers Galleries, a division of Fortune 500 Company Spectrum Group International Inc., was launched in January 2011, combining the extraordinary histories of Stack's, the oldest rare coin auction and retail company in America, with Bowers and Merena Auctions, one of the world's pre-eminent auctioneers of rare coins and paper money.
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Stack's Bowers and Ponterio
California, USA | 1982 | 100% Stake
www.stacksbowers.com
Ponterio & Associates, Inc., was founded in 1982 by Richard Ponterio, a renowned specialist in world and ancient numismatics. The company was acquired by Bowers and Merena Auctions in 2008, creating an auction powerhouse that covers the collecting interests of U.S. and international coin and currency enthusiasts.
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Teletrade
California, USA | 1986 | 100% Stake
Established in 1986, Teletrade is the largest Internet auction company for certified coins and currency featuring over 250,000 lots in its auctions each year. The company’s certified coin and currency offerings span the modest to high-end spectrum. Teletrade holds auctions Sunday through Wednesday, plus advertised special event sales on other days of the week.
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