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|Bulova 8BA (ETA 1220)|
8 x 9''', Dm=Do= 18.55 x 20.85mm
corners with rests rounded for
9.75''', Dm= 21.7mm, Do= 22.2mm
f = 18000 A/h
power reserve 43h
Balance staff U1782
Mainspring / battery
Zf761, 1.25 x 8.5 x 0.10 x 250mm
1.24 x 0.60 / 0.17mm
Comments about the data
balance system from Bulova
8AH: Breguet hairspring
new setting works:
8AD: Breguet hairspring
8BA: flat hairspring
Example, year: signature; shock device
1948: 48, BXW, Bulova Watch Co, Swiss, 17 Jewels
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|
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