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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Bulla 19'''

stem wind and set
sub second

19''', Dm= 42.45mm, Do= 43.05mm
H= 4.7mm
F= 0.6mm
T= 1.8mm
15 jewels
f = 18000 A/h
power-reserve 28h

2.00 x 1.04 / 0.30mm

Comments about the data

hunter or open face calibre
bimetallic screw balance
Breguet hairspring
In popular movment catalogs only few Bulla calibres up to 13''' are listed, occasionally under the brands E.J., Juillard, or Emile Juillard

Example, year: signature; shock device
ca. 1930: Bulla - 256

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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