Important Modern & Vintage Timepieces

Hong Kong, Jun 28, 2014

LOT 333

HEUER REF. 110633 CALCULATOR STEEL Heuer, "Calculator, Automatic Chronograph," Ref. 110633. Made in the 1970s. Fine and unusual, oversized, tonneau-shaped, water-resistant, self- winding stainless steel left-handed wristwatch with round button chronograph, registers, date, bezel with slide rule.

Three-body, polished and brushed, screwed-down case back, winding-crown at 9, chronograph buttons at 2 and 4, hooded lugs, revolving double bezel serving as slide rule to convert WEIGHT , volume and distance measurements. Navy blue with applied luminous steel baton indexes, outer 1/5th seconds scale, subsidiary dials for the 12-hour and 30-minute registers, aperture for the date. Luminous white baton hands. Cal. 12, gilt brass, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating balance spring.