Longines UltraChron Diver specialpricing Daredevil aviator Jimmy Mattern wore

Daredevil aviator Jimmy Mattern wore a Wittnauer AllProof in his aborted flight around the world in 1933

ETA-based automatic movement and a depth rating of 1200 feet

so it’s a special day when we are able to offer one in this condition

an importer of fine Swiss timepieces by brands such as Jaeger LeCoultre and Vacheron et Constantin

Longines UltraChron Diver specialpricing Daredevil aviator Jimmy Mattern woreNowadays, a watch with a 36,000 beat rate isnt deemed to be a technological marvel, but in the 1960s it definitely was. Back then, 18,000 bph (that is, beats per hour) was the standard. But watch brands, obsessed with accuracy, sought to improve upon it. Internally speaking, a higher beat rate allows for increased accuracy; externally, it leads to a smoother sweeping of the seconds hand. Both of these factors, the watch industry felt, would be