Ref:510.501, Movement No.04037424, Circa 1985
17-jewel Lemania Cal.5100 automatic movement signed on the rotor Lemania, matt black dial, printed luminous baton hour markers and outer minute divisions, inner white printed Arabic numerals at 5 minute increments, raised printed white on black 350 to 50 tachymeter scale, dial signed Heuer Automatic, white baton hands with luminous inserts, orange chronograph hand and orange arrow tipped hand for 60 minute recording, day and date apertures at 3, subsidiary dials at 6, 9 and 12 for running seconds, 12 hour recording and 24 hour calibrated second time zone with luminous filled hand, black PVD coated tonneau shaped case with concave top surface around the thin plain bezel and stainless steel screw down back signed Heuer 5100 inside, Heuer signed black anodised crown flanked by twin fluted chronograph pushers, fitted black PVD coated Heuer link bracelet with folding clasp, case, dial and movement signed
41mm.