Bertha's Gallery AuctionsKirtland, OH Hardt Auctions GmbHRadevormwald, NORTH RHINE WESTPHALEN Mynt AuctionsNew York, NY William Smith AuctionsPlainfield , NH Mynt AuctionsNew York, NY Hardt Auctions GmbHRadevormwald, NORTH RHINE WESTPHALEN Ziebarth's GalleryMount Horeb, WI Artemis Fine ArtsLouisville, CO Art Leaders GalleryWest Bloomfield, MI Art Leaders GalleryWest Bloomfield, MI Gorny & Mosch GmbHMunich, Bavaria Williamson Auction GalleryHollywood, FL Belmont AuctionsLondon, UK Chairish Auction HouseLoveland, CO Dahlstroms AuctioneerAvignon, Provence-Alpes-Cote d'Azur Artemis Fine ArtsLouisville, CO