Around 1970/80. 18 ct. yellow gold, marked. Manual winding. Marks on case bottom (18k) and folding clasp ('CB750 Swiss Made'). Crown gilded. Clearly visible traces of usage. 35 x 20 mm, l. approx. 18,5 cm, weight approx. 85,2 g. Details and replacementvalue of 1.570 Euro according to report of the Gemmologisches Insitut Hamburg from March 2014.