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Fig. 1

View picture in original size
Fig. 2

Gruen 512CD

manual wind
sweep second
day: set by changing 22-1:00h
date: set by changing 22-24h

11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.7mm
F= 2.0mm
T= 2.7mm
17 jewels
f = 18000 A/h
power reserve 42h

Balance staff U2856

Stem W2810

1.40 x 0.80 x 0.25mm

Comments about the data


early fixed, later mobile stud carrier
510 : sub second
510SS: sweep second
510CA: sweep second, date
modified base olate, new mobile stud carrier
N510 : sub second
N510SS: sweep second
N510CA: sweep second, date
one instead two crown-wheel screws
512CD: sweep second, day, date
suffix R: Incabloc in calibres also made without shock protection

Example, year: signature; shock device
ca. 1965: Gruen Watch Co, 512CD, Swiss, Unadjusted, 17 Jewels; Incabloc

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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