Switzerland, the first third of the 20th century, the men´s pocket watch, 14K gold case, metal inner case, signed International Watch Co. Schaffhausen, Milano Grand Prix of 1906, number 422596, white enamel dial, signed, the machine is running, labeled IWC, number 402296, micro regulation, bolted chatons, diameter 50 mm, width 14 mm, total weight 84 g