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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Junghans 684.80 (J84)

manual wind
sweep second

11.5''', Dm=Do= 25.8mm
H= 4.0mm
T= 2.0mm
17 jewels
f = 18000 A/h
power reserve 45h

Balance staff U2404

Stem W3144 / W2808
thread 0.9mm/1.0mm

Mainspring / battery
1.45 x 10.0 x 0.11mm

1.41 x 0.79 x 0.18mm

Comments about the data

1955-1967 (all generations)
attention: likeky left handed ratchet-wheel screw as noticed in 84/S3

J84, J84/1, screw balance, Trilastic:
684.80 (J84): special mainspring
684.80 (J84/1): standard mainspring
J84/S, ring balance, Trilastic:
684.70: base calibre
684.72: raised hands
684.73: date
J84/S3, Meister, mounting flange or Trilastic:
684.71: base calibre,
684.76: raised hands
684.77: date
J84/S10, Kif-Duofix, mounting flange:
684.00: base calibre
684.01: raised hands
684.02, 684.74: date
J84/S10, Meister, Kif-Duofix, mounting flange:
684.10: base calibre
684.11: raised hands
684.12, 684.75: date

Example, year: signature; shock device
1960: Junghans 84/S, H0, 17 Jewels; Junghans II
(Junghans 684.70)

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.

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