Eterna Heritage
Most Eterna Heritage references take a 20 mm watch strap: 6 of 9. The lug width follows the case size: 40 mm case → 20 mm and 42 mm case → 18 mm.
Eterna Heritage lug width by case size
9 references measured. Updated 2026-10-29.
| Case | Lug width | References | Watch strap attachment | For example |
|---|---|---|---|---|
| 36 mm | 20 mm | 1 | — | 1938.41.45.1250 |
| 40 mm | 20 mm | 3 | — | 1939.41.46.1298, 1939.43.46.1299, 2960.69.11.1272 |
| 42 mm | 18 mm · 20 mm on 1 | 4 | — | 1942.41.64.1177, 7630.41.50.1186, 7630.41.61.1185 |
| 44 mm | 20 mm | 1 | — | 1973.41.41.1230 |
References that take a different watch strap
- 7630.69.10.1185: 20 mm, not the 18 mm of most 42 mm cases
Every Eterna Heritage reference
- Chronograph Limited Edition 19381938.41.45.1250
20 mm - Military Limited Edition 19391939.41.46.1298
20 mm - Military Limited Edition 1939 PVD1939.43.46.1299
20 mm - Pulsometer Limited Edition 19421942.41.64.1177
18 mm - Super Kontiki Limited Edition 19731973.41.41.1230
20 mm - Centenaire Date 40mm2960.69.11.1272
20 mm - Centenaire Date 32mm2961.69.11.1295
20 mm - Vaughan Big Date Black7630.41.50.1186
18 mm - Vaughan Big Date Silver7630.41.61.1185
18 mm - Vaughan Big Date Rose Gold7630.69.10.1185
20 mm
Other Eterna families
Inside each one the lug width often changes: it is the reference that decides.
All Eterna families → · Why the size changes inside a family →