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|Hamilton 21 (ETA 2442)|
6''', Dm= 13.5mm, Do= 13.75mm
f = 21600 A/h
power reserve 41h
Balance staff U2753
Mainspring / battery
1.43 x 5.5 x 0.0625 x 201mm
1.00 x 0.50mm
Comments about the data
early fixed (Fig.1), later mobile stud carrier (Fig.3)
indirectly driven minute allows a very big balance
differences not known between 21, 211
Example, year: signature; shock device
1-2) ca. 1960: 34, 17 Jewels - DWH (WH in D), Patented; Incabloc
3-4) ca. 1965: BP, Swiss, Swiss, 17 Jewels - Patented; 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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