ETA 1256
First automatic movement from ETA, manufactured 1950 - 1954.
Data: ETA cal: 1256
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17/21/25 jewels, automatic wind, hour, minute, center second. -
Size: 11,5''' 25,60 mm. -
H: = 5,85 mm. -
N: = 18000. -
Power reserve: 40 h.
Versions:
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1256: option: power reserve indicator, H=6,90 mm. -
1257: minor modifications, (1950 - 1961). -
1258: date, H=6,00 mm, (1953 - 1955). -
1259: date, H=6,00 mm, (1955 - 1961), redesigned 1258.