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| Eterna 1237T Features automatic sweep second date Data 12.5''', Dm= 27.6mm H= 5.85mm 17 jewels f = 18000 A/h power reserve 45h | Remarks 1949 first gents automatic-family with ball-bearing rotor (the very first in 1948 was a ladies size: 1194-1199) was already in the year of introduction replaced by the 1237UT with different rotor shape The simultaneous change from T- to U shock device and to a modified calibre (suffix C) lead to many variants. It is unknown whether all calibres were made in the variant TC (old shock device, new calibre); so only the known are listed here. Even signatures of UT versions were changed to UC (cf. 1247UT). same base calibre like bumper predecessors 1158, 1159 detached manual wind, details cf. 1249UC family: manual wind: 1078: 10.5''' 1079: 11.5''' automatic, without/with date: 1247/1237: 12.5''' 1248/----: 11.5''' 1249/1239: 13''' 1253/1243: 13''' 1254/1246: 13.5''' Example, year: signature; shock device 1949: 3439030, EXA, Eterna-Matic Watch Co, Swiss, Brev. Dep., 17 Jewels; Eterna-T (Eterna 1248T, 11.5''') |
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