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Landeron 47

manual-wind chronograph, 60s, 30/45min, cam switched
sub second

13.75''', Dm= 31.0mm, Do= 31.5mm
H= 6.2mm
F= 0.6mm
T= 1.6mm
17 jewels
f = 18000 A/h
power reserve 41h

Balance staff U1457

Stem W1158

Mainspring / battery
Zf978, 1.35 x 12.0 x 0.14 x 360mm

1.85 x 1.30 x 0.25 / 0.27 x 0.22mm

Comments about the data

option: 3 pushers (reset with crown pusher)
first chronograph with cam switching
just shortly produced predecessor of the Landeron-48 family
From the Landeron 47 to the 48 there was a floating transition. Many parts were modified, but except the minute-recorder jumper all are interchangable. Samples with all features of the Landeron 47 (like the examples) are pretty rare, and therefore can be dated to the first production year.

Example, year: signature; shock device
1-2) 1937: - Brevet+
3-4) 1937: - Brevet+ (3 pushers)

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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