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 Fig. 1  Fig. 2 | Landeron 56 Features manual-wind chronograph, 60s, 30/45min, cam switched sub second Tag, pusher at 10:30h date hand at 6h, pusher at 4:30h month, pusher at 1:30h Data 14''', Dm= 31.8mm 17 jewels f = 18000 A/h power reserve 41h Balance staff U1457 Stem W1158 Mainspring / battery Zf978, 1.35 x 12.0 x 0.14 x 360mm Hands 1.85 x 1.30 x 0.25 / 0.27 x 0.20mm Comments about the data | Remarks 1937-1970, >3.500.000 (all derivatives based on Landeron 48) There were various chrono mechanisms. And as their parts often were interchangable, occasionally series were produced with parts of different calibres. like 58, with bigger pillar plate family: 48: 13.75''' 54: 14''' 56: 14''', calendar 58: 13.75''', calendar Example, year: signature; shock device 1) ca. 1950: - (Landeron 54) 2) 1962: old data sheet 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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