BOUCHERON. A PLATINUM AND ONYX OPEN FACE POCKET WATCH Date: Circa 1960's Movement: Patek Philippe style unmarked, bridge plate, nickel finish,14-Jewels,  Dial: Signed, "Boucheron Paris", silvered, black Arabic numerals, black outer minute division, blued hands, subsidiary dial at the 6 o'clock position Case: Brushed and polished platinum, snap on back, onyx stones on the edge (one missing) No.85865 Size: 44.5mm Weight: Approx. 47g