IWC. Secret wristwatch in 750°°° yellow gold, rectangular case, silvered dial with hour-markers concealed under a cover that opens with a press stud, integrated bracelet in amatie basket-weave, clip clasp and adjustable length. Hand-wound mechanical movement, calibre 431. Dial, back, movement and clasp signed. Case no. 1537357, movement no. 1541949 and clasp no. 95675. Circa 1960. Case size: 17 x 14 mm Length of bracelet: 14 to 18 cm - Width: 2.2 cm Gross weight: 96.2 g Good condition, functional. All watches were functionally tested at the time of writing and this study gives an opinion (functional or not). However, the accuracy of the movements is not guaranteed, nor is the functioning of the watches after the sale. After purchasing a second-hand watch, it is always advisable to have it serviced.