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Landeron 4750
Basic Information
| Name | Landeron 4750 |
|---|---|
| Manufacturer | Landeron |
| Launch Year | 1960 |
| Is COSC certified | No |
Technical Details
| Lignes Dimensions | 11.5 ‴ |
|---|---|
| Dimensions | 25.94 mm |
| Height | 4.35 mm |
| Further Measures | Mounting Diameter (Dm): 25.6mm |
| Power Reserve | (not set) |
| Frequency | 18,000 vph |
| Jewels | 13 |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Shock Protection | Incabloc |
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Manual |
| Escapement Type | Swiss Lever |
| Control Type | Balance, electrical control |
| 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: 1960-1961 first electrical Swiss wrist-watch movement early samples without excenter regulator (Fig.3) standard mounting frame Dm=Do=30.2mm (photos) Other data: mainspring / battery: external, 1.3V...1.65V balance staff ronda: 4783 (11,5) Ranfft mentioned about this caliber: There are variants with this quantity of jewels 12, 13 |
| Signature | 1-2) ca. 1960: QZY, Onsa Watch Factory, Swiss, 12 Jewels - NZ; Incabloc 3) ca. 1960: Enicar; Incabloc |
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | Apr 23, 2025, 11:33:13 PM |
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