D&B Business Directory
Spectrum Group International, Inc.
Overview
Spectrum Group International
From gold bullion to fine wine, one auction house spans the spectrum of global collectibles. Spectrum Group International (SGI) operates primarily in the area of collectibles. It conducts traditional live auctions (focused on coins and rare and vintage wines), as well as online and telephone auctions. Its primary auction business is Stack's Bowers Galleries, a California-based auction house that specializes in US and global coins and currency. ...
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In 2014 SGI spun off its trading business, A-Mark Precious Metals, which sells coins and other precious metals on a wholesale basis; that business generates most of SGI's revenue. The company was founded by Greg Manning, who started collecting stamps at age 7, and opened an office to market stamps in 1971 at the age of 25.
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Gregory N Roberts   See more contacts
Business Support Services Miscellaneous Durable Goods Merchant Wholesalers Jewelry, Luggage, and Leather Goods Retailers Auction, appraisal, and exchange services Precious Metals
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Jewelry, precious stones and precious Metals
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Actual

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Actual
$24.43 million
Actual
-6.99% -17.06% $371
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OTC:SPGZ
Contacts
Get in Touch with 4 Principals* and 36 Contacts
  • Gregory N Roberts
    President and Chief Executive Officer
  • Contact 2
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Financial Data
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Financial data as of January 13, 2025 (12 month period) in USD
Annual Revenue
$24.43 million USD
Modelled
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