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9.75''', Dm= 21.7mm, Do= 22.0mm
f = 18000 A/h
Balance staff U1402 (AS 574)
Stem W1137 (AS 574)
Mainspring / battery
Zf1302, 1.60 x 8.0 x 0.09 x 250mm (AS 574)
1.20 x 0.60mm
Comments about the data
bimetallic screw balance (in economical models not cut)
various bridge layouts, example 3-4 probably exclusively for Gallet
This movement demonstrates imressively that a smart design needs no setting-lever spring. Strange that the successor AS 574 got this absurd and often breaking part.
Example, year: signature; shock device
1-2) ca. 1920: - 716, AS
3-4) ca. 1925: Gallet & Co, Swiss, 15Jewels, Unadjusted - 32
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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