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Felsa 90
Basic Information
| Name | Felsa 90 |
|---|---|
| Alternative Name | AM 90 |
| Manufacturer | Felsa |
| Launch Year | 1945 |
| Caliber Family | Description 90, 186, 245: H= 3.4mm 145, 168, 201, 204, 229, 236: H= 4.0mm Related calibers Felsa 145, Felsa 168, Felsa 186, Felsa 201, Felsa 204, Felsa 229, Felsa 236, Felsa 245, Felsa 90 |
| Is COSC certified | No |
Technical Details
| Lignes Dimensions | 9.75 ‴ |
|---|---|
| Dimensions | 21.99 mm |
| Height | 3.4 mm |
| Further Measures | Mounting Diameter (Dm): 21.7mm |
| Power Reserve | (not set) |
| Frequency | 18,000 vph |
| Jewels | 15 |
Complications and Specifications
| Shape | Round |
|---|---|
| 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 | 1.20 x 0.60mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: earlier 5.25" calibre with same designation differences not known between 90, 186, 245 Other data: balance staff: U770 stem: W795 mainspring / battery: Zf480, 1.10 x 8.0 x 0.09 x 250mm balance staff ronda: 2941 (9,75) stem ronda: 1332 (5,25) stem ronda: 975 (9,75) Mainspring: 1.700 x 7.500 x 0.090 x 240.000 mm Ranfft mentioned about this caliber: There are variants with this quantity of jewels 6, 15 |
| Signature | ca. 1945: Warwich Wa. Co, 90FE, Swiss, 2 Adjts 6 Jewels - 69907 |
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | May 26, 2026, 4:43:49 AM |
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