3940J, First Series, Perpetual Calendar, Yellow Gold LeCoultre Air & Space Museum

Air & Space Museum

Its design creates a sense of place and culture

from the very first years of the Royal Oak

Breitling switched very quickly to a Venus calibre for reasons still unknown

1 of just 20 examples made

3940J, First Series, Perpetual Calendar, Yellow Gold LeCoultre Air & Space MuseumA First Series ref. 3940J, one of fewer than 1000 examples. Featuring a 'Type B' Stern configuration with stepped subdials, this early example still employed many manual dial making techniques such as manually finished apertures and applied indices. Just 8mm thanks to the revolutionary micro rotor calibre 240 Q, the 3940 has defined the design of the perpetual calendar as a complication since. This example includes the rarely seen and early ellipse