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Fig. 5

Eterna 1414U new

Features
automatic
sweep second

Data
13''', Dm= 29.0mm, Do= 29.4mm
H= 5.55mm
(ball bearing +0.05mm)
F= 1.6mm
T= 2.1mm
17/21 jewels
f = 18000 A/h
power reserve 48h

Balance staff U2266

Stem W2411

Mainspring / battery
1.55 x 11.0 x 0.11mm

Hands
1.50 x 0.90 x 0.21mm

Comments about the data

Remarks
1953-1958
option: micrometer regulator

family:
without/with date respectively:
1411/1421: 11.5''', domed dial
1412/1422: 12.5''', domed dial
1413/1423: 12.5''', flat dial
1414/1424: 13''', domed dial
1415/1425: 13''', flat dial
1416/1426: 13.5''', domed dial

generations:
old: identified by pawl wheels, late samples with details of new base plate
new: base plate modified, new pawl wheels, late samples with 2-spoke ring balance
suffix UD: 3-spoke ring balance, new hairspring stud and hour-wheel spring, early samples still with balance, stud and/or spring from predecessor, and partially without number

Example, year: signature; shock device
1956: 4331057, Eterna-Matic, Brevete; Eterna-U
1958: 4538539, W., Eterna-Matic, Brevete; Eterna-U
(late sample, already with ring balance and new stud carrier)

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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