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stem wind and set
18.5''', Dm= 41.1mm, Do= 41.7mm
f = 18000 A/h
power reserve 33h
Balance staff U1003
1.92 x 1.16 / 0.26mm
Comments about the data
different bridge shapes (cf. Helvetia 33LI)
30: H= 3.62mm
31: H= 4.2mm
32: H= 4.8mm
33: H= 5.3mm
suffix A, B, I: meaning unknown
Suffix L: open face
suffix S: hunter
Not all possible variants were made; here only variants, known from literature or reality, are listed.
Example, year: signature; shock device
ca. 1930: E.L.S. (Erhard Lauterbach, Sonneberg, DE) - G.W.Co (General Watch Co), 33S, I
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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