CHECK'S ANTIQUES Celebrating Over 50 Years in Business. Being a part of the second oldest city in Wisconsin, Prairie du Chien, Check's Antiques is still family owned and operated by the Check Family. Open Daily April - November. Located at 115 S. Dousman, Prairie du Chien, WI 53821. When you visit CHECK'S ANTIQUES, the love and care they took to establish their business will still warm your heart, and you will be sure to find a treasure that helps bring that warmth into your own home! It is the Oldest Authentic Antique Shop in the area featuring Quality Furniture, Red Wing, Crocks, Tools, Old Paper, Architecturals, Primitives, Advertising, Toys and so much more!!! Buys, Sells, & Estates. Buying whole or partial estates.