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Fig. 1

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Fig. 2

Longines 9LT (=Longines 25.17ABC)

manual wind
sub second

8 x 11.5''', Dm= 17.7 x 25.95mm
Do= 17.8 x 26.55mm
H= 3.7mm
F= 1.25mm
T= 1.8mm
17 jewels
f = 18000 A/h
power reserve 43h

Balance staff U2078

Stem W2399

Mainspring / battery
1.60 x 10.0 x 0.10 x 360mm

1.33 x 0.76 / 0.20mm

Comments about the data

indirect sub second

27.17, 9L: bimetallic balance, Breguet hairspring
27.173: monometallic balance, Breguet hairspring
base plate, barrel bridge, regulator modified
27.17, 9L new: bimetallic balance, Breguet hairspring
27.17ABC, 9LT: monometallic balance, flat hairspring

Example, year: signature; shock device
1952: 8443873, 25.17ABC, LXW, Longines Watch Co Swiss, 9LT, 17 Jewels - Longines

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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