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no manual wind
day: quickset, 2 languages
12''', Dm= 27.0mm, Do= 27.4mm
f = 21600 A/h
power reserve 47h
Balance staff Seiko 311601
Stem Seiko 354601
Mainspring / battery
1.50 x 0.90 x 0.20mm
Comments about the data
sophisticated excenter self-winding mechanism with just one gear stage (details cf. Seiko 6139B)
like 6309A, but 21 jewels
Example, year: signature; shock device
1984: Seiko, Japan, 17 Jewels; Diashock
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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