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date: set by changing 21-24h
10.75''', Dm= 24.0mm, Do= 25.0mm
f = 18000 A/h
power reserve 47h
1.58 x 1.03 x 0.13mm
Comments about the data
indirectly driven minute allows a very big balance
two barrels coupled in parallel use the remaining space most efficiently
Attention! Never, never ever unlock the stem unless you have pulled the crown to setting position. And never insert the stem without pushing the release button, even not if the collar towards the square is conical to lift the set lever. Else you have a high chance to mix up the parts of the setting works, and rearranging them is much more troublesome than in most other movements.
2414: manual wind, date
2416: automatic, date
2427: automatic, day, date
2428: manual wind, day, date
2429: manual wind, no second, day, date
Example, year: signature; shock device
ca 1980: 253297, 21 Jewels; Aera-Slava
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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