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View picture in original size
Fig. 1

View picture in original size
Fig. 2

UMF 24-39

manual-wind alarm
alarm electrically

10.75''', Dm= 24.0mm, Do= 24.4mm
H= 5.6mm
(balance cock +0.5mm, alarm contact +0.3mm)
F= 0.9mm
T= 2.6mm
0 jewels
f = 18000 A/h
power reserve 35h

Balance staff U3036

Stem according length with crown
W2598, 10.9mm
W3027, 13.5mm
W3209, 14.0mm (waterproof)
W3035, 15.0mm
W3089, 16.0mm
W3368, 16.5mm (waterproof)

Mainspring / battery
Zf1396, 1.70 x 10.0 x 0.12 x 290mm

1.50 x 1.00mm

Comments about the data

1963-1990, ca. 130 Mio (whole family)
pin-lever escapement
ratchet on dial side, crown mechanism with rocker bar
1966: 3-armed spring on regulator
1975: adjustable stud carrier, modified mainspring arbor and friction spring
1976: polymide rocker

24-24: transparent discs instead hands, so called Punktuhr
24-26: kids watch, moving eyes
24-30: no second
24-31: sub second
24-32: sweep second
24-33: sweep second, date
24-34: digital display
24-35: sweep second, stop feature
24-39: for alarm Midimatic and Sumatic
24-41: 2 jewels, sub second
24-42: 2 jewels, sweep second

Example, year: signature; shock device
1973: 1673, 24-00

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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