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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1  Fig. 2  Fig. 3 | ETA 2425 Features automatic Data 6.75''', Dm= 15.3mm, Do= 15.55mm H= 4.95mm F= 1.0mm T= 1.75mm 17/21 jewels f = 18000 A/h power reserve 35h Balance staff U2520 / U3126 for balance with/without screws Stem W3046 Mainspring / battery 1.40 x 6.5 x 0.07mm Hands 1.20 x 0.60mm Comments about the data | Remarks 1956- like Eterna 1419U, but 1800A/h and neither ball bearing nor gold rotor indirectly driven minute allows a very big balance family: 2410, 2415: manual wimd, 18000 A/h 2412, 2413, 2417: manual wimd, 21600 A/h 2425: automatic, 18000 A/h 2428: automatic, 21600 A/h Example, year: signature; shock device 1956: 3991714, 23 carat Golden Heart Eterna, Eterna-Matic, Brevete, 21 Rubis - Patented; Eterna-U (Eterna 1419U) 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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