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|Zenith 51.0 (ETA-ESA 9180)|
quartz controlled stepper motor
electrical hack feature
13''', Dm= 29.0mm, Do= 29.6mm
f = 32768 Hz
Stem ESA 9180
Mainspring / battery
1.50 x 0.90 x 0.25mm
Comments about the data
first ETA quartz movement
51.5: day, date
Example, year: signature; shock device
1974: Zenith Ltd, Swiss, 7 Jewels
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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