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Longines 506

sweep second
date: quickset by repeated pushing the crown

11.5''', Dm= 25.6mm, Do= 26.0mm
H= 5.3mm
F= 1.1mm
T= 1.9mm
17/21 jewels
f = 21600 A/h
power reserve 44h

Balance staff U3314

Stem W3265
(W3264 for cases without recess to push the crown)

1.50 x 0.90 x 0.22mm

Comments about the data

micrometer regulator
This movement line is a Record design, and it was adopted by Longines, when Record was acquired by Longines. It is not known, whether the later variants with 21600A/h were also available as Record calibres.

19800 A/h:
501: date
503: day, date
505: quickset date
507: day, quickset date
21600 A/h, micrometer regulator:
506: quickset date
508: day, quickset date

Example, year: signature; shock device
1972: 51365433, Longines, Swiss, 21 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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