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View picture in original size
Fig. 1

View picture in original size
Fig. 2

MST 417

Features
manual-wind alarm
sweep second

Data
12''', Dm= 27.0mm
H= 6.15mm
17 jewels
f = 18000 A/h
power reserve 42h
alarm 18s

Balance staff U2041

Stem W2260

Mainspring / battery
Zf877, 1.30 x 10.5 x 0.12 x 320mm

Hands
2.20 x 1.50 x 0.90 x 0.20mm

Comments about the data

Remarks
1952-1955

generations:
417: -
427: alarm assembly slightly modified

Operating Instruction
Wind watch and alarm: the movement has two independent barrels for watch and alarm. It is recommended to wind both completely each morning as follows:
Make sure that the crown is completely pushed in.
Watch: turn crown towards 6h.
Alarm: turn cown towards 12h.
Attention: if a resistance appears in one or the other direction, the according barrel is completely wound up. Do not force further. Continue to wind in the other direction.
Set time: pull crown to the second latch and set time. If you set the time reverse and pass the alarm time, this will be set reverse simultaneously.
Set alarm: pull crown to the first latch and set alarm time. The alarm time can only be set reverse, setting forward is inhibited by a freewheel.
Enable alarm: turn cown a bit towards 12h; i.e. the alarm is automatically enabled whenever it is wound.
Disable alarm: press the pusher down.

Example, year: signature; shock device
ca. 1960: 24, Roamer Watch Co, Swiss, 17 Jewels - MST 427; Incabloc
(MST 427)

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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