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Alpina 107
Basic Information
| Name | Alpina 107 |
|---|---|
| Alternative Name | Gruen 107, Gruen 1077 |
| Base Calibre | Gruen 107 |
| Manufacturer | Alpina |
| Launch Year | 1930 |
| Is COSC certified | No |
Timegrapher
Beat rate
20,160 bph
Frequency
2.8 Hz
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Technical Details
| Lignes Dimensions | 5.75 ‴ x 8.5 ‴ |
|---|---|
| Dimensions | 12.85 mm x 19.7 mm |
| Height | 3.4 mm |
| Further Measures | Mounting Diameter (Dm): 12.85 x 19.2mm Stem height (T): 1.5mm Mounting Height (F): 0.3mm |
| Power Reserve | 40 hours |
| Frequency | 20,160 vph |
| Jewels | 17 |
Complications and Specifications
| Shape | Rectangle |
|---|---|
| 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 | 1.50 x 0.90 x 0.20mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: Alpina Gruen Gilde 1929-1937 *) Flume lists the frequencies 18000 and 20160 A/h, but in Gruen catalogs an according remark is missing. bimetallic screw balance, Breguet hairspring signature often or always Gruen 106 (example movement out of Alpina watch) differences not known between 106, 107 probably designations for different base-plate shapes, round corners (Fig.1, 2) or octogonal Other data: balance staff: U1964 stem: W2077 mainspring / battery: Zf477, 1.10 x 7.0 x 0.09 x 190mm Ranfft mentioned about this caliber: There are variants with this quantity of jewels 15, 17 |
| Signature | ca. 1930: 106, 695647, Gruen Watch Co, Precision, Switzerland, Swiss, 17 Jewels - 695647, Pat. (Gruen 1067) |
Compatible Parts
No parts linked yet for this caliber.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | May 26, 2026, 4:43:41 AM |
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