|Index||Timepiece Archive, Categories||Archive: Watch Movements||Timepiece Market|
electronically controlled tuning fork
mechanical hack feature
12.5''', Dm= 27.7mm, Do= 28.75mm
H= 5.5mm (4.9mm between plates)
f = 360Hz
Stem Bulova 2140
Mainspring / battery
387 (original, mercury), 394 (replacement, silver odixe, adapter necessary)
1.30 x 0.85 x 0.20mm
Comments about the data
setting handle at the bottom
The hack feature is realized with an extended setting-wheel spring, blocking the fork. So a 2140 can be easily converted to a 2141. But it is not worth while: The watch doesn't start immediately after flipping down the handle, because the fork needs some time to restart oscillating.
nickel plated, up to 1968 / gilt since 1968:
214H/2141: hack feature
214HN/2142: hack feature, second time zone
-/2143: since 1970, features unknown
Example, year: signature; shock device
1969: M9, Bulova, Brevet-Patent, Swiss Made - E
Not for Sale!
The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating.
|bidfun-db 21.3 © 02-08-15, mtr-Ranfft|
...the alternative - free of charge!