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View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

Dürrstein 21'''

stem wind and lever set
sub second

21''', Dm= 46.7mm, Do= 47.45mm
H= 6.45mm
F= 0.4mm
T= 3.1mm
15 jewels
f = 18000 A/h
power reserve 32h

1.85 x 0.55 / 0.28mm

Comments about the data

hunter calibre
bimetallic screw balance
Breguet hairspring
counter-weight lever with hidden pallets (Fig.3)
barrel with Geneva stopwork
ebauche manufacturer FHF, cf. FHF 19'''H6.5

Example, year: signature; shock device
ca. 1905: Dürrstein Monopol - 163637, 5

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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