ETERNA | VINTAGE CALATRAVA | MINT
by Eterna
Minimalist Eterna in Calatrava style in fantastic condition Switzerland, 1947
ETERNA | CALATRAVA | 35MM (37.5MM WITH CROWN) | HAND-WINDING | SILVER DIAL WITH 12-HOUR SCALE | CAL. 520h | MINT CONDITION | 1947 | SWITZERLAND
Technically, the Eterna works perfectly: (297 °; + 8s / d).
This Swiss watch manufacturer Eterna was founded in Grenchen in 1856 by the doctor Josef Girard and the teacher Urs Schild as the raw works manufacturer Girard & Schild. It is thus also the nucleus of the largest Swiss watch manufacturer ETA SA.
The lettering Eterna has been on the dial since 1875. From 1932 the company was divided into:
- Eterna S.A. as a manufacturer of precision watches and the
- ETA S.A. as a manufacturer of clock blanks.
From this division onwards, the companies were run through the holding company ASUAG.
The present caliber 520h corresponded to the chronometer standards of the time. In 1947 Eterna equipped Thor Heyerdahl's expedition team on the Kon-Tiki raft with the watches. And in 1948 the manufacturer presented the Eterna-Matic, a ball bearing rotor for automatic winding. Even today, the company logo contains these 5 balls as a sign of the invention of the ball-bearing rotor.
Eterna has been part of the Chinese company China Haidian since 2011.
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