Important Modern & Vintage Timepieces

Geneva, May 12, 2013

LOT 307

OLLECH & WAJS ? 24-HOUR WRISTWATCH & WRIST COMPUTER ? TWO WRISTWATCHES ? NEW OLD STOCK Ollech & Wajs, Zurich, ?Early Bird & Computer?. Made in the late 1960s. Two interesting and unusual stainless steel diver?s wristwatches

A) ?Computer? Stainless steel diver?s water-resistant, antimagnetic wristwatch with two crowns, tachometer, 24-hour indication and slide-rule. C. Three-body, tonneau-shaped, brushed and polished, revolving red and blue 24-hour bezel, screw-down case back, thick flat crystal. D. Two-tone satine silvered and green, inner 24-hour numerals, outer tachometer and outermost slide-rule with rotating inclined scale operated by the second crown. Luminous arrow and alpha hands. M. 12???, rhodium plated, 17 jewels, straight line lever escapement, monometallic balance, self-compensating flat balance spring, shock absorber. Dial, case and movement signed. DIAM. 39.5 mm. THICKNESS 12.5 mm. B) ?Early Bird? Stainless steel diver?s water-resistant to 20ATM, antimagnetic wristwatch with 24-hour hand rotation and 24-hour dial. C. Three-body, tonneau-shaped, brushed and polished, revolving red and blue 24-hour bezel, screw-down case back, thick domed crystal. D. Black with luminous baton and triangular indexes, outer 24-hour numerals. Luminous arrow and alpha hands. M. 12???, rhodium plated, 17 jewels, straight line lever escapement, monometallic balance, self-compensating flat balance spring, shock absorber. Dial, case and movement signed. DIAM. 38 mm. THICKNESS 11 mm.