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Fig. 2

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Fig. 3

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Fig. 4

Laco 526 (Durowe 410)

manual wind
sub second

10.5''', Dm= 23.3mm, Do= 23.8mm
H= 4.1mm
F= 0.5mm
T= 1.9mm
16/17 jewels
f = 18000 A/h
power reserve 41h

Balance staff U369 / U1323
without/with riveting collar

Stem W322 / W3063
thread 0.9mm/1.1mm

Mainspring / battery
Zf1309, 1.60 x 9.0 x 0.10 x 290mm

1.40 x 0.80 / 0.18mm

Comments about the data

option: separate escape-wheel cock

523: 9 jewels, sub second
524: 15 jewels, sub second
526: 16 jewels, sub second
526(SC): 16 jewels, sweep second
527: 17 jewels, sweep second

Example, year: signature; shock device
1-2) ca. 1940: 526 - Durowe
(16 jewels)
3-4) ca. 1945: - Durowe
(Durowe 410)

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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