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Hamilton 666
Basic Information
| Name | Hamilton 666 |
|---|---|
| Alternative Name | Buren 1000A |
| Base Calibre | Buren 1000A |
| Manufacturer | Hamilton |
| Launch Year | 1957 |
| Caliber Family | Description 663, 666: second with friction spring 619: second with double third wheel, date 620: second with double third wheel Hamilton designations of other Buren calibres will be added, as soon as they become known. Related calibers Hamilton 619, Hamilton 620, Hamilton 663, Hamilton 666 |
| Is in house development | No |
| 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 | 12.5 ‴ |
|---|---|
| Dimensions | 28.5 mm |
| Height | 4.2 mm |
| Further Measures | Mounting Diameter (Dm): 28.15mm Stem height (T): 1.9mm Mounting Height (F): 1.5mm |
| Power Reserve | 42 hours |
| Frequency | 18,000 vph |
| Jewels | 25 |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Shock Protection | Incabloc |
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Automatic |
| Rotor Type | Micro-Rotor |
| Escapement Type | Swiss Lever |
| Control Type | Balance Wheel |
| Winding Type | Automatic (Rotor-Driven) |
| Setting Type | Stem Set (Crown Pull) |
Additional Information
| Hand Sizes | 1.50 x 0.90 x 0.22mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: 1957-1962 first movement family with micro rotor selfwinding gear with direction switching by a pinion floating between two huge jewels (Fig.3) in 17-jewels variants one of these jewels substituted by polished steel disc differences not known between 663, 666 Other data: balance staff: U2490 stem: W2403 mainspring / battery: 1.00 x 9.5 x 0.095mm Mainspring: 1.000 x 9.500 x 0.095 x 340.000 mm Ranfft mentioned about this caliber: There are variants with this quantity of jewels 17, 25 |
| Signature | ca. 1960: HYL, BAA, 1000A, Hamilton Watch Co., 663, Swiss, 17 Jewels; Incabloc (Hamilton 663) |
| Import Codes |
|
Compatible Parts
96 other caliber(s) share compatible parts with this caliber.
89 compatible part(s) available — Supporter feature.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | May 26, 2026, 4:43:51 AM |
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