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Brand: | ETA, Valgranges | 
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|---|---|---|---|
| Family: | |||
| Height: | 7.90 mm | ||
| Jewels: | 25 | ||
| Reserve: | 54 hours | ||
| Frequency: | 28,800 A/h | ||
| Winding: | Automatic, Central Rotor Automatic Winding, Clockwise Automatic Winding, Uni-Directional Automatic Winding | ||
| Diameter: | 36.60 mm (16.5 ligne) | ||
| Complications: | 2-Button, Cam Switching Chronograph, Chronograph, Date, Hacking Seconds, Quick Date Correction | ||
| Hands: | 12 Hour Chronograph Hand at 6:00, 30 Minute Chronograph Hand at 12:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Small Seconds Hand at 9:00 | ||
| Distinguishing Technical Characteristics | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Central-Rotor Automatic  Clockwise Balance Cock  Etachron Regulator |
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| Production: 2005 – | |||||||||||
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
The Valgranges A07.211 is essentially identical to the venerable ETA 7750 but on a larger main plate. The movement also lacks a day complication.
Valgranges A07.211 Ebauches and Variants
The movement is also sold as the EDOX 012.
ETA 7750 Family Overview
The ETA (formerly Valjoux) 7750 is a robust and reliable automatic movement with an integrated cam-operated chronograph function. It has spawned a family of chronograph and time-only movements and is used as a base for many complications and third-party watch movements.
Introduced in 1974, the Valjoux 7750 was soon retired but returned in the 1980s. It has come to dominate the industry and remains popular today. Most versions of Cal. 7750 feature small seconds at 9:00 and chronograph hours and minutes subdials at 12:00 and 6:00, respectively. This “6-9-12” subdial arrangement is instantly recognizable to watch enthusiasts.
Distinguishing features of the ETA 7750 family include a smaller balance wheel than many historic movements and a small rotor hub with a slotted screw and five visible bearings. The balance is located at 1:30 when viewed from the back with the crown at 9:00, and is located by a clockwise cock. The chronograph functions use cams rather than the levers and column wheel found on many other movements.
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.
