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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Geneva Sport 230

Features
manual wind
sub second

Data
10.5''', Dm= 23.3mm, Do= 23.7mm
H= 3.5mm
F= 1.2mm
T= 1.7mm
17 jewels
f = 18000 A/h
power-reserve 39h

Balance staff U1936

Stem W2247

Mainspring / battery
Zf1211, 1.50 x 9.0 x 0.10 x 290mm

Hands
1.30 x 0.70 / 0.20mm

Comments about the data

Remarks
About the trademark under the balance (SYW in an oval) nothing could be found in literature, movement catalogs, and Internet. But after the set-lever spring shown in Bestfit Part II from 1972 the movement can be assigned to Geneva Sport. Moreover it was meanwhile seen in a watch branded with Geneva Sport on the dial.

family:
229: 9.75'''
230: 10.5'''

Example, year: signature; shock device
ca. 1945: SYW, 230, Swiss Made, 17 Jewels

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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