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Helvetia 80C
Basic Information
| Name | Helvetia 80C |
|---|---|
| Manufacturer | Helvetia |
| Launch Year | 1955 |
| Caliber Family | Description 80: 11.5" , sub second 820: 10.5" , sub second 800: 11.5" , sweep second 820: 10.5" , sweep second 800: 11.5" , sweep second, plane base plate suffix C: two screws for crown wheel Related calibers Helvetia 80, Helvetia 800, Helvetia 800C, Helvetia 80C, Helvetia 82, Helvetia 820, Helvetia 820B, Helvetia 820C, Helvetia 82C |
| 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 | 11.5 ‴ |
|---|---|
| Dimensions | 25.95 mm |
| Height | 4.05 mm |
| Further Measures | Mounting Diameter (Dm): 25.55mm Stem height (T): 1.9mm Mounting Height (F): 1.2mm |
| Power Reserve | 40 hours |
| Frequency | 18,000 vph |
| Jewels | 17 |
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 | 1.35 x 0.80 / 0.22mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: different bridge shapes (cf. 82C) late samples with Kif-Duofix combined settings for escapement wheel Other data: balance staff: U1448 stem: W1180 mainspring / battery: Zf1321, 1.60 x 9.5 x 0.095 x 330mm Ranfft mentioned about this caliber: There are variants with this quantity of jewels 15, 17 |
| Signature | ca. 1955: Helvetia, Swiss Made, 15 Jewels - 3026; Helvetia-Shock-Absorber (only dial side) |
| Import Codes |
Compatible Parts
No parts linked yet for this caliber.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | Apr 23, 2025, 11:32:59 PM |
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