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electronically controlled tuning fork
day: set by changing 18-24h
12.5''', Dm= 28.75mm
f = 360Hz
Stem Bulova 2180
Mainspring / battery
343 (original, mercury), 344 (replacement, silver odixe)
1.40 x 0.85 x 0.18mm
Comments about the data
2190: specified but never produced
2191: no date
Example, year: signature; shock device
ca. 1975: Bulova U.S.A., 2193.10
© G. Makszy
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.
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