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electronically controlled tuning fork
8.75''', Dm=Do= 19.4mm
f = 480Hz
Stem Bulova 2300
Mainspring / battery
343 (original, mercury), 344 (replacement, silver odixe)
1.40 x 0.80 x 0.18mm
Comments about the data
2300: only hour, minute
2302: second, date
2303: second, day/date
2312: second, date, larger pillar plate
2313: second, day/date, larger pillar plate
Example, year: signature; shock device
1974: N4, Patent, Bulova Watch Co, 13 Jewels, Swiss
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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