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Vintage ETA Cal. 2551 Swiss automatic movement. The balance moves freely, the date changes, and the hands move. When wound, the balance responds, but the movement has not been tested for accuracy or full function.
Comes with a dial and crown. This caliber is also known to appear in watches using the Tissot 746 family.
*Functionality is described only as observed. Full performance is not guaranteed.*
*A full service is recommended due to age and unknown service history.*
*The following specifications come from published ETA 2551 references and are provided for general information only. They may vary depending on production batch or configuration.*
| Manufacturer: | ETA |
| Caliber: | 2551 |
| Size: | 7 3/4''' |
| A/h: | 21600 |
| Number of jewels: | 21 |
| Escapement: | Pallet lever |
| Balance types: | Nickel anular balance |
| Shock protection(s): | Incabloc |
| Balance bearing / direction hairspring: | Clockwise |
| Moveable stud: | yes |
| Adjust mechanism: | Long regulator arm |
| Construction: |
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| Winding mechanism: | yoke winding system |
| Features: |
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| References: | Flume: K3 151 |
| Mentioning in literature (years): | 1968 - 1971 |
The ETA 2551 was used in various Swiss watches from the late 1960s to early 1970s, including some models sharing architecture with the Tissot 746. Because case, dial, and stem requirements vary, exact compatibility is not guaranteed.
*Compatibility information is provided for reference only — please confirm fitment before purchase.*
Wire Transfer Customer
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