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Alpina 123
Basic Information
| Name | Alpina 123 |
|---|---|
| Alternative Name | Gruen 123 |
| Base Calibre | Gruen 123 |
| Manufacturer | Alpina |
| Launch Year | 1925 |
| Is COSC certified | No |
Timegrapher
Beat rate
18,000 bph
Frequency
2.5 Hz
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Technical Details
| Lignes Dimensions | 8.75 ‴ x 12 ‴ |
|---|---|
| Dimensions | 19.74 mm x 27.07 mm |
| Height | (not set) |
| Further Measures | Nominal Diameter (Dn): 19.74 x 27.07mm |
| Power Reserve | (not set) |
| Frequency | 18,000 vph |
| Jewels | 17 |
Complications and Specifications
| Shape | Barrel (Tonneau) |
|---|---|
| Complications |
|
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Manual |
| Escapement Type | Swiss Lever |
| Control Type | Balance Wheel |
| Winding Type | Stem Winding (Crown) |
| Setting Type | Stem Set (Crown Pull) |
Additional Information
| Hand Sizes | (not set) |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: 1925- bimetallic screw balance, Breguet hairspring |
| Signature | ca. 1925: 701737, Gruen Watch Co, Precision, Extra, Switzerland, 17 Jewels (Gruen 123) |
Compatible Parts
25 other caliber(s) share compatible parts with this caliber.
6 compatible part(s) available — Supporter feature.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | May 26, 2026, 4:43:41 AM |
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