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Claro Watch
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Claro
Watch
SA
/
C.
Weber-Chopard
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Biel, Claro und Grenchen, Schweiz[/TD]
Este es el registro de la marca del calibre y como te han dicho antes es Ronda 1218-21.
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Ronda 1218-21[/SIZE]
Features
automatic
sweep second
date: quickset by reverse setting
Data
12''', Dm= 26.6mm, Do= 27.0mm
H= 6.1mm
17 jewels
f = 21600 A/h
Balance staff U3254
Stem W3215
Mainspring / battery
1.40 x 9.5 x 0.105mm
Hands
1.80 x 1.30 x 0.20mm
Remarks
pin-lever escapement
family:
pin lever / Swiss lever:
1x11/1x31: manual, no second
1x13/1x33: manual, sweep second
1x15/1x35: manual, sweep second, date
1x16/1x36: auto, sweep second
1x17/1x37: manual, sweep second, day, date
1x18/1x38: auto, sweep second, date
1x19/1x39: auto, sweep second, day, date
1x21/1x41: manual, sweep second, digital display
1x23/1x43: manual, sweep second, alarm
1x26/1x46: auto, sweep second, digital display
1x66/1x86: auto, digital display incl. second
x=0: 10.5'''
x=1: 11.5'''
x=2: 12'''
x=3: 13.5'''
suffix -21: 21600A/h
Swiss-lever movements normally have the singature RAX under the balance, but some also RL like the pin levers.
Not all variants were actually made. Only those are listed, which are actually known or contained in current registers.
Example, year: signature; shock device
ca. 1975: RAX,
Ronda-Matic, Sicura SA, Swiss, 17 Jewels; Kif-Protechoc
(Ronda 1239-21)
te dejo un enlace a un hilo donde hablan un poco de este calibre.
https://relojes-especiales.com/foros/vintages/sorpresas-te-dan-marcas-70s-160799/
en cuanto a la marca del reloj Yashica
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Yashica
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Kyocera
Corp.
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[TD="align: left"]Tokio, Japan; registriert am 14.11.1972[/TD]
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