Important Watches, Collector's Wristw...

Hotel Richemond, Geneva, Oct 13, 2001

LOT 72

Heuer Calculator, Automatic Chronograph, case No. 284218. Produced in the 1970's.Fine and unusual tonneau-shaped, self-winding, water-resistant, stainless steel gentleman's wristwatch with winding-crown on the left, round button chronograph on the right, registers, date and calculator, with a Tag Heuer stainless steel buckle.

C. three-body, polished and brushed, screwed-down case back, revolving double bezel serving as calculator to convert kilometers into nautical knots, yards and miles, as well as other measures, hidden lugs. D. navy blue with tritium-coated applied steel indexes, outer 1/5th of second white painted scale, auxiliary dials for the 12 hours and 30 minutes registers, aperture for the date. "Bâton" tritium-coated orange hands. M. Cal. 12, gilt brass, 17 jewels, straight line lever escapement, monometalic balance, self-compensating flat balance-spring, planet rotor for the chronograph system.Dial, case and movement signed.Dim. 45 x 47 mm.