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electromechanically controlled balance motor
jumping sweep second
date: set by changing 22:30-24h
electrical and mechanical hack feature
13.5''', Dm= Do= 30.55mm
(balance bearing +0.3mm, battery +1.5mm)
f = 21600 A/h
Mainspring / battery
1.30 x 0.60 x 0.19mm
Comments about the data
Movements of this kind are not self-starting. So when pulling the crown, the balance is locked in a position, from which it reliably starts when pushing the crown (Fig.3).
am/pm display by dot below/above date numeral (Fig.4)
Attention: With once setting the hands back and forth, the date is only advanced half a day. So the date can be set at noon and midnight, but care must be taken that the dot is finally in the correct position (cf. above).
880: electromechanical, date
modifications base plate, balance bridge
881: electromechanical, date
882: electronical, date
Example, year: signature; shock device
1) ca. 1965: 870, West Germany, 7 Jewels; Duro-Swing
2-4) 1969: Timex, 881, W. Germany, 7 Jewels; Duro-Swing
(Timex M85 new, Durowe 881)
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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