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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

Felsa 21 alt

manual wind
sub second

8.75''', Dm= 19.45mm, Do= 19.75mm
(late samples Dm= 19.4mm)
H= 3.4mm
15 jewels
f = 18000 A/h
power reserve 36h

Balance staff U526

Stem W526

Mainspring / battery
Zf930, 1.35 x 7.5 x 0.09 x 220mm

1.15 x 0.70 /0.20mm
(late samples 1.20 x 0.66 / 0.18mm)

Comments about the data

different bridge shapes
later 6''' calibre with same designation

Example, year: signature; shock device
1-2) ca. 1920: Liema Watch, Swiss, 15 Jewels, 2 Adustments
3-4) ca. 1930: 94, Swiss Made, 15 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.

bidfun-db 21.3 © 02-08-15, mtr-Ranfft

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