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10.5 / 11.5''', Dm= 23.3mm / Dm=Do= 25.5mm
f = 18000 A/h
power reserve 40h
Balance staff U1621
Mainspring / battery
Zf1309, 1.60 x 9.0 x 0.10 x 290mm
1.40 x 0.70mm
Comments about the data
since ca. 1940 recorded as Pierce 103
Example, year: signature; shock device
ca. 1945: Swiss, 15 Jewels
© Pierce 1883
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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