Potsdam, NYBlanchards Auction Service Potsdam, NYBlanchards Auction Service Ypsilanti, MISchmidt's Antiques Inc. Since 1911 Potsdam, NYBlanchards Auction Service Potsdam, NYBlanchards Auction Service Ypsilanti, MISchmidt's Antiques Inc. Since 1911 Mamaroneck, NY & Dania Beach, FL Potsdam, NYBlanchards Auction Service New Hamburg, ONMiller & Miller Auctions Ltd.