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View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

Elgin 780

Features
manual wind
sub second

Data
13/0 size, Dm= 19.3 x 23.3mm
Do= 19.3 x 23.8mm
H= 3.7mm
(cap-jewel plates +0.15mm)
F= 0.9mm
T= 1.9mm
23 jewels
f = 18000 A/h
power reserve 40h

Hands
1.14 x 0.66 / 0.20mm

Comments about the data

Remarks
1958-1963 (730...780)
flat freesprung hairspring
DuraBalance regulator: balance with two regulating weights, shifted simultaneously along the spiral-shaped spokes with a regulator lever
screwed cap-jewel plates for balance; shock protection is realized by the elastical balance spokes

family/generations:
Elgin combined settings for balance:
730: 23 jewels, Adj. 3 Pos., BWR, LE
730A: 23 jewels, Adj. 6 Pos., LE
732: 19 jewels, Adj.
750: 23 jewels, Adj. 3 Pos., LE
752: 19 jewels, sweep second, Adj.
cap-jewel plates for balance:
770: 23 jewels, Adj. 6 Pos., LE
772: 19 jewels, Adj.
775: 23 jewels, sweep second, Adj., LE
777: 19 jewels, sweep second, Adj.
780: 23 jewels, Adj. 3 Pos., BWR, LE

model names:
BWR: B.W. Raymond
LE : Lord Elgin

Example, year: signature; shock device
ca. 1960: Elgin 770, USA, 6 Adj, 23 Jewels
(Elgin 770)

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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