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 Fig. 1 | Dugena 3900 (Unitas 6480) Features manual wind sub second date Data 8.75''', Dm= 19.4mm, Do= 19.7mm H= 3.95mm F= 1.35mm T= 2.25mm 17 jewels f = 21600 A/h power reserve 43h Balance staff U2618 Stem W2701 Mainspring / battery Zf1187, 1.50 x 7.5 x 0.08 x 245mm Hands 1.20 x 0.60 / 0.18mm Comments about the data | Remarks differences not known between 636, 3900 family/generations: 636, 3900: date 637, 3901: - Example, year: signature; shock device ca. 1965: Swiss Made, 17 Jewels; Incabloc (Unitas 6365N) 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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