Start Year
1940
End Year
1950
Jewels
15, 17
Reverend Rob
Posted November 6, 2018 - 2:15pm
Start and end dates are a guess.
7 jewel version may well have only been used on Westfield models, but this has not been confirmed.
10.5'''
Dm= 23.35 mm, H= 3.5mm, F= 1.3mm, T= 1.7mm
18,000 a/H Frequency
41 hour Power Reserve
Mainspring: 1.55 x 9.0 x .10 x 290mm
Hands: 1.40, .80, .22
Based on the ETA 900 ebauche with balance and escapement modified by Bulova.
