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View picture in original size
Fig. 1

Longines 6651

Features
automatic
sweep second
date: set by changing 22:30-24h

Data
11.5''', Dm= 25.6mm, Do= 26mm
H= 4.9mm
(ball bearing +0.1mm)
F= 1.7mm
T= 2.0mm
25 jewels
f = 28800 A/h
power reserve 40h

Stem W3253

Hands
1.50 x 0.90 x 0.21mm

Comments about the data

Remarks
1972-

family/generations:
36000 A/h, excenter regulator:
430: sweep second
431: sweep second, date
432: no second
433: no second, date
28800 A/h, micrometer regulator:
6641: sweep second, 25 jewels
6642: sweep second, 17 jewels
6651: sweep second, date, 25 jewels
6652: sweep second, date, 17 jewels

Example, year: signature; shock device
1972: 51602075, Longines, Longines Watch Co Swiss, 28'800, Adjusted 4 Positions and Temperature, 25 Jewels; Kif-Ultraflex

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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