This single tea cup has Windsor on the base. The mark suggests it was made between 1887 and 1915. It has the gold rose mark over the original manufacturers mark suggesting he used a 'blank' or 'white ware' manufactured by someone else and decorated under his name. He was known to be a perfectionist who only used items from renown companies like the Königliche Porzellan-Manufaktur in Meissen. This cup is in excellent condition. No saucer. 12 x 10 x 5 cm.