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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Felsa 86

manual wind
sweep second

10.5''', Dm= 23.3mm
15/17 jewels
f = 18000 A/h

Balance staff U591

Stem W193

Mainspring / battery
Zf1389, 1.70 x 9.0 x 0.10 x 290mm

1.40 x 0.80mm

Comments about the data

bimetallic screw balance
differences not known between 86, 88, 89, 136, 138, 285, 327

71: sub second
86: sweep second
100: sub second, date
131: sub second, 11'''

Example, year: signature; shock device
ca. 1935: 119017, Gothic Watch Co New York, Jar-Proof, Adjusted to Temperature, Patent + No.102795, Made in Switzerland, 17 Jewels - 212498, Pat'd
(Felsa 71, sub second)

© B. Johnson

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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