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20/0 size, Dm= 13.2 x 15.55mm
f = 18000 A/h
power reserve 41h
Mainspring / battery
1.10 x 8.0 x 0.09mm
0.90 x 0.50mm
Comments about the data
flat freesprung hairspring
DuraBalance regulator: balance with two regulating weights, shifted simultaneously along the spiral-shaped spokes with a regulator lever
the shock protection is realized by the elastical balance spokes
830 : adjusted in 3 positions
830A: adjusted in 6 positions
Example, year: signature; shock device
ca. 1960: Elgin, U.S.A, 6 Adj, 23 Jewels
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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