COORS Thermo Porcelain Pitcher with Lid “Open Window” Garden Theme 8” Tall - Vintage. Coors Porcelain is derived from Coors Brewing Company in Colorado. Coors Porcelain came into being around 1920 and was changed in 1986 to Coors Ceramics. This particular pitcher is marked "Coors Thermo Porcelain". Circa 1930's. Pitcher is cream with the "Open Window" with florals and a picket fence design.