Chronomatic Countdown, Circa 1975
17-jewel Hamilton Cal.14 chronograph movement signed Hamilton on the bridge, matt black dial with applied luminous filled/steel squared hour batons, white subsidiary dials for 12 hour and 30 minute recording red and white printed calendar aperture at 6, outer recessed cream chapter with red printed running seconds, rotating black and white night-day 24 hour disc with red 24 hour numerals, matt black rotating disc for cities of the world, heavy brushed and polished tonneau shaped case with screw on back, black and red crowns for the city and 24 hour discs respectively in the band flaking the winding crown, red chrome finished chronograph buttons in the band at 8 and 10 positions, fitted brush link bracelet with folding clasp, case and movement signed Hamilton Watch Co, dial signed Jaquet Girard
49mm.