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View picture in original size
Fig. 1

Bulova 12OUCD (Citizen 4840)

Features
electronically controlled balance motor
sweep second
date
hack feature

Data
12.5''', Dm= 28.0mm, Do= 28.4mm
12 jewels
f = 21600 A/h

Stem Citizen 065-73

Mainspring / battery
301

Hands
1.50 x 1.00 x 0.16mm

Comments about the data

Remarks
1970-

family:
12OTC: 18000 A/h
12OUCD: 21600 A/h, date
After common Bulova nomenclature T in 12OTC and U in 12OUCD indicate different generations. It is not known whether according calibres 12OTCD and 12OUC exist.

Example, year: signature; shock device
1970: N0, Caravelle Watch, 12OUCD, Lic. ATO, 12 Jewels; Parashock

© G. Makszy
Homepage: www.mechanikus.hu

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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