Buenas tardes. Lo primero felicitar a sie7e por compartir el setentero SAVAR, gracias amigo es muy bonito y verde.... un color que creo que ahora esta de moda.......
Del calibre no opino porque no lo conozco ni tengo ningún reloj con ese movimiento, pero dejo los datos técnicos sacados de la página del Doctor Ranfft, me llama la atención las distintas medidas que se fabricaron de este movto.
[SIZE=+1]
Ronda 1237[/SIZE]
Features
manual wind
sweep second
day: no quickset
date: quickset by reverse setting
Data
12''', Dm= 26.6mm, Do= 27.0mm
H= 4.8mm
7/17/23 jewels
f = 18000 A/h
power reserve 41h
Balance staff
U3254
Stem
W3215
Main spring / battery
Zf1035, 1.40 x 10.0 x 0.10 x 360mm
Hands
1.80 x 1.30 x 0.20mm
Comments about the data
Remarks
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. 1970: RL, C2, Delaware Watch Co, Swiss, 17 Jewels; Incabloc
(Ronda 1233-21, 21600A/h)
Saludos
Fernando