HomeRanfft
Watches
Pink Pages
for Timepieces
.
Home
All Items
Ranfft Items
Brand Shops
Commit an Item
How to do right
Condition of Watches
About Watches
Links
  Help   Log In  Register, Clients   Deutsch  English  EUR  US$  CHF  UKŁ 
 
 
 Index  Timepiece Archive, Categories  Archive: Watch Movements    Timepiece Market 
 
View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

ETA 2451

Features
automatic
sweep second

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 5.3mm
F= 1.4mm
T= 1.85mm
17/21/25/30 jewels
f = 18000 A/h
power reserve 42h

Balance staff U2226 / U3136
for balance with/without screws

Stem W2426, W3226

Mainspring / battery
Zf869, 1.30 x 9.5 x 0.105 x 300mm

Hands
1.50 x 0.90 x 0.21mm

Comments about the data

Remarks
early fixed, later mobile stud carrier (cf. ETA 2452)
during manufacturing periode modifications of base plate and rotor (cf. photos and ETA 2452)
base calibre for the Tudor 2483
differences not known between 2451, 2459, 2461, 2465

family/generations:
2390: manual wind, 10.5'''
2391: manual wind
2406: manual wind, date
2408: manual, new date mechanism
2450: automatic, 10.5'''
2451: automatic
2452: automatic, date
2453: like 2451, but single-material rotor
2454: like 2452, but single-material rotor
2456: automatic, date, 10.5'''
2471: automatic, prepared for new date
2472: automatic, new date mechanism

Example, year: signature; shock device
1-2) ca. 1965: BWC, Swiss, 25 Jewels - Patented; Incabloc
3)ca. 1955: Solvil et Titus Geneve, Swiss, 30 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


bidfun home
...the alternative - free of charge!
Dr. Roland Ranfft
Erkelenzer Str. 98
41844 Wegberg
Germany
phone +49 (0)2434 6034670

email: info@ranfft.de
.