L2.751.4.53.4Ref

The Longines Twenty-Four Hours, powered by self-winding calibre L704.3 with 24-hour hands, comes in a 47.50 mm steel case with a matt black dial featuring 24 white Super-LumiNova Arabic numerals and a railway-track minute circle. It has Super-LumiNova hands, a centre seconds hand, a date at 3, a sapphire crystal, and a transparent caseback with an engraved cover reading "Re-edition of a Longines navigation watch exclusively made for Swissair navigators, 1953-1956" plus the watch number; the caseback also bears the Swissair name. This reissue replicates a 1950s Longines watch for Swissair navigators, equipped with the pilot-oriented 37.9N calibre designed in the 1940s, and was one of 70 examples produced between 1953 and 1956 exclusively for Swissair, mounted on a black alligator strap and water-resistant to 3 bar.