Nivada Grenchen. A stainless steel automatic calendar wristwatch with depth gauge Model: Depthomatic Date: Circa 1960 Movement: Jewelled automatic Dial: Silvered, luminous dot hour markers, baton quarters, black outer rotating bezel, date aperture at 3, polished arrow hands with luminous inserts, centre seconds Case: Brushed and polished round, screw down back, crown for inner bezel at 2, winding crown at 4, fixed aluminium depth bezel, inner depth meter capillary tube notched to allow water to access a chamber and give depth rating, No.1376M2413 Strap/Bracelet: Associated black rubber Buckle/Clasp: Associated steel buckle Signed: Case, dial & movement Size: 43mm For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing