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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Otero 794

Features
automatic
sweep second
date: set by changing 20:30-24h

Data
11.5''', Dm= 25.6mm, Do= 25.9mm
H= 5.55mm
F= 1.5mm
T= 2.2mm
25 jewels
f = 21600 A/h
power reserve 44h

Balance staff U2937

Stem W2601

Mainspring / battery
1.20 x 9.5 x 0.10mm

Hands
1.50 x 0.90 x 0.21mm

Comments about the data

Remarks
excenter winding mechanism

family/generations:
18000 A/h
old balance, early big, later small hand-gear bridge
70 : manual wind, 10.5'''
71 : manual wind
712: manual wind, date
78 : automatic
782: automatic, date
new balance, big hand-gear bridge
72 : manual wind
722: manual wind, date
73 : manual wind, 10.5'''
new balance, small hand-gear bridge, new automatic
74 : manual wind
742: manual wind, date
77 : automatic
772: automatic, date
79 : automatic, new rotor bearing
79K: automatic, ball bearing
792: automatic, date, new rotor bearing
792K: automatic, date, ball bearing
21600 A/h
740 : manual wind
744 : manual wind, date
746 : manual wind, digital
790 : automatic
790K: automatic, ball bearing
794 : automatic, date
794K: automatic, date, ball bearing
795 : automatic, date, Terminofix
795K: automatic, date, Terminofix, ball bearing
796 : automatic, digital
796K: automatic, digital, ball bearing
797 : automatic, day, date
794K: automatic, day, date, ball bearing
minor modifications, higher bridges
840: manual wind
844: manual wind, date
845: manual wind, date, Terminofix
846: manual wind, digital
847: manual wind, day, date
new automatic, quickset date
800: manual wind
801: manual wind, date
804: manual wind, date, thinner mainspring
900: automatic
901: automatic, date
904: automatic, date, thinner mainspring
906: automatic, digital, thinner mainspring
907: automatic, day, date, thinner mainspring

Example, year: signature; shock device
ca. 1970: Patented, 25 Jewels; Incabloc

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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