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date: set by changing 20-24h
11.5''', Dm= 25.6mm, Do= 26.0mm
f = 18000 A/h
f = 21600 A/h
Balance staff U3191
1.30 x 0.85 x 0.21mm
Comments about the data
detached manual wind
The movements of the family were made with 18000 and 21600 A/h as far as known. The 558 is not recorded in movement catalogs, and only samples with 21600 A/h are known.
The meaning of the signature HJP instead HPP on these samples is unknown.
differences not known between
450, 460: automatic
451, 461: automatic, date
452, 454: manual wind
453, 455: manual wind, date
rotor and date driver modified:
558: automatic, date
Example, year: signature; shock device
ca. 1970: HJP, Automatic; HPP-Super-Shockproof
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.
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