Pair of Polish Pottery Unikat Signed Mugs. Excellent condition! Dimensions: Height: 3.8″ Diameter: 3.5″ Capacity: 12 oz Origin: Boleslawiecz, Poland USE & CARE: Oven safe up to 350º F Dishwasher safe Microwave oven-safe Lead and cadmium-free POLISH POTTERY FEATURES: First quality only Evenly distributes heat and draws moisture away from the surface Retains heat, so your just-out-of-the-oven foods stay hot longer Non-stick, non-porous surface, so it doesn't retain oils, odors or flavors Boleslawiec white clay molded and painted by hand Pre-baked at 1562 degrees Fahrenheit Glazed and fired at 2280 degrees Fahrenheit No two pieces are exactly alike. Each piece is an individual work of art Each piece is an individual work of art Non smoking home and quick shipping!