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electronically quartz-controlled tuning fork
day: set by changing 18-24h
mechanical hack feature
12.5''', Dm=Do= 28.75mm
f = 3411/3Hz / 32768 Hz
tuning fork / quartz
Stem Bulova 2240
Mainspring / battery
343 (original, mercury), 344 (replacement, silver odixe)
1.40 x 0.85 x 0.18mm
Comments about the data
2240: no date
Example, year: signature; shock device
1975: N5, Bulova U.S.A., U.S.A.Pat.2.971.323 etal
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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