• Movement 
  • Lot number 
  • Location


Omega, Bienne, "Chronomètre de Bord", movement No.
4000128, case No. 5896516, Ref. BA 121 JS. Completed
February 6th, 1920 and delivered to Belgium.
Very fine and very rare, chromed brass and mahogany,
keyless, eight day-going Marine lever Chronometer with
stop feature for precision setting and Guillaume balance.
Accompanied by the Extract from the Archives.
Two-tier mahogany box with chromed fittings, signature
plaque on the lower front. Chromed brass bowl with
weighted base and gimballed suspension, locking slide,
winding and hand-setting crown and button at 10 for the
stop-feature for precision setting.
Matte silvered with champlevé Paris numerals, subsidiary
seconds, outer minute track. Black steel Breguet hands.
Cal 21''' BORD, matte gilt, 17 jewels, the second and
third wheels with blue jewels on the upper plivots, straight
line lever escapement, Guillaume cut bimetallic compensation
balance with gold adjustment screws, blued steel
Breguet balance spring with terminal curve, swan-neck
micrometer regulator.