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Fig. 1
Fig. 2
Fig. 3[/TD]
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Gruen 475[/SIZE]
Features
automatic (bumper)
sub second
Data
10.75 x 10.75''', Dm= 24.05 x 24.1mm
H= 5.5mm
F= 1.65mm
T= 2.1mm
17 jewels
f = 18000 A/h
power reserve 34h
Balance staff U2146
Stem W2332
Mainspring / battery
1.47 x 8.0 x 0.0925 x 225mm
Hands
1.22 x 0.66 / 0.16mm
Comments about the data[/TD]
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Remarks
1948-
Breguet hairspring
first Gruen automatic
family/generations:
460: sub second, 11.5'''
460SS: sweep second, 11.5'''
462: modified automatic, sub second, 11.5'''
462SS: modified automatic, sweep second, 11.5'''
470: sub second, cushion shape 11.5 x 11.5'''
470SS: sweep second, cushion shape 11.5 x 11.5'''
475: sub second, cushion shape 10.75 x 10.75'''
Example, year: signature; shock device
ca. 1950: 1H 86018, GXC, Gruen Watch Co, Precision Switzerland, 475, 17 Jewels, Autowind Veri-Thin, Patented; Incabloc[/TD]
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