This mug has a plump, thick feel. It's a lovely mug with a color reminiscent of low pottery and the warmth of stoneware. The brown coloring in various places on the cup is due to the glaze, not dirt. The manufacturer is unknown, but it has the same stamp as low pottery. I previously purchased it from Antry. ●Size Height: 9cm Diameter: 10cm Ant Stella Pottery Ceramic Blue Gray Stoneware Blue Artisan Stylish Low Pottery Pottery Western tableware Country Antry