Dreweatts Donnington PrioryAndover The Arts Auction HouseYorktown Heights, NY Mynt AuctionsNew York, NY The Arts Auction HouseYorktown Heights, NY HIGH END GEMS & JEWELS LTDManchester, England The Arts Auction HouseYorktown Heights, NY Mynt AuctionsNew York, NY Antique Arena Inc.Brooklyn, NY Sworders Fine Art AuctioneersEssex, UK Mynt AuctionsNew York, NY Chairish Auction HouseBurbank, CA California GemstonesSan Diego, CA Dr. Fischer Fine Art AuctionsHeilbronn, Baden-W?rttemberg M.J. Stasak Jr. Auction and Appraisal ServiceBelvidere, NJ Mynt AuctionsNew York, NY Matthew Bullock AuctioneersOttawa, IL