Steel casing: 43 mm diameter H: 14 mm Caseback with visible mechanism bezel Diameter 33 mm. Case with polished finish. Engraving with manufacturer's ID and 18 kt yellow gold plaque with detailing applied on the back over the mechanism, and with central ruby stone in 18 kt yellow gold setting. Colonnade case. Dial bezel and caseback in sapphire crystal. Patterned lugs with 4 x 18 kt gold screws. Water resistant: 3 ATM Precision Berthet mechanism, hand-wound, with complications. 'Cotes de Geneve, 1930s' manufacture with exclusive modifications, Reserve de Marche, made with calibre ETA 6498 soignee. SWISS MADE. 18,000 alterations per hour (2.5 Hz energy consumption). Guillochè rhodinated finishing. 17 rubies. Blue screws. Engraved with ID number of the mechanism. Engraved with Leonardo Urim Shamir on the rochet. Incabloc shock proof system Impressive winding crown with ruby stone (4.50 mm) cabochon. Alligator strap (see photo), adjustable to 5 cm approx. Insured shipping.