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 Fig. 1  Fig. 2  Fig. 3 | Langendorf 1020 Features manual wind sweep second Data 10.5''', Dm= 23.35mm, Do= 23.65mm H= 3.6mm F= 1.25mm T= 1.8mm 17 jewels f = 18000 A/h power reserve 37h Balance staff U2502 Stem W22271 Mainspring / battery Zf860, 1.30 x 9.0 x 0.11 x 260mm Hands 1.40 x 0.90 x 0.22mm Comments about the data | Remarks strange: With an intermediate wheel (bearing A, Fig.3) between center minute pinion B and excentric minute wheel C the height was reduced, since only the center-second wheel overlaps the barrel (details see Langendorf 1233). Example, year: signature; shock device ca. 1960: Lanco, 1020, Swiss Made - LWC; Incabloc 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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