Important Modern & Vintage Timepieces

Hong Kong, Jun 22, 2013

LOT 442

TUDOR REF. 7031 OYSTERDATE CHRONOGRAPH 441 TUDOR REF. 7169 CHRONOGRAPH Tudor, ?Oyster-Date Chronograph,? case No. 763515, Ref. 7031/0, case made by Rolex, Geneva. Made in 1970. Fine and rare, water-resistant, stainless steel wristwatch with date, round-button chronograph, register and tachometer.

C. Three-body, polished and brushed, screwed-down engraved case back, crown and buttons, tachometer graduation on the black bezel to 500 units per hour, Triplock winding crown protected by the crown guard, crystal with cyclops lens
D. Bicolor anthracite and black with painted luminous indexes, outer 1/5th seconds scale with 5 minute/second orange Arabic markers, subsidiary dials for the seconds and the 45-minute register, aperture for the date at 6. Luminous steel baton hands
M. Cal. Valjoux 7734, rhodium-plated, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring. Dial, case and movement signed. Diam. 40 mm. Thickness 13 mm.