Rowe Pottery Works Salt Glazed Crock Double Birch Leaf Coffee Mug Red Wing Logo. Rowe Pottery is made in Cambridge WI and is very collectible for "newer" stoneware. Each piece is marked by the company logo. The double birch leaf pattern reminds me of the Red Wing Stoneware design on their old crocks. Not positive but just reminds me. I'm a collector of Red Wing stoneware. Size is 3 1/2" diameter x 4 1/2" High. Great shape! Only 1 like it! Packaged carefully for shipment.