Eterna · Heritage

Strap for Military Limited Edition 1939 PVD

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference1939.43.46.1299
FamilyHeritage
MovementETA caliber 2824-2 hours, minutes, seconds | date
Year2014
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Heritage 1939.43.46.1299

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Heritage 1939.43.46.1299, seen from the bench

The Eterna Heritage 1939.43.46.1299 is a 40mm stainless steel watch featuring an ETA caliber 2824-2 automatic movement with date display, 25 jewels, and approximately 40 hours of power reserve. The model has a 20mm lug width and represents Eterna's reinterpretation of 1930s–1940s watchmaking aesthetics. The watch requires careful strap selection due to its integrated bracelet architecture and precision mounting system.

Frequently asked questions

What is the lug width of the Eterna Heritage 1939.43.46.1299?

The lug width (ansa) of the Eterna Heritage 1939.43.46.1299 is 20mm. This measurement represents the distance between the two lugs of the case and determines which aftermarket strap can be correctly fitted to the watch. It is essential to verify this dimension before purchasing a replacement strap.

What is the best strap for the Eterna Heritage 1939.43.46.1299?

The ideal strap depends on intended use and personal preference. To enhance the vintage character of the model, we recommend a shell cordovan strap with vegetable tanning, which develops a noble patina over time. For formal occasions, alligator or box calf leather represents aesthetic excellence. For versatile daily wear, a NATO strap in cotton or a technical rubber solution offers practicality without compromising elegance.

How do I change the strap on an Eterna Heritage watch?

Changing the strap requires specific tools: a spring bar tool to remove the lugs from the case. Place the watch on a clean surface, insert the tool under the lug pin until it lifts slightly, then extract the pin. Repeat on both sides. To fit the new strap, align the strap holes with the pins and press gently until you feel the locking click. If you lack experience, consult a specialist.

Is there an aftermarket strap compatible with the 1939.43.46.1299?

Yes, any high-quality strap with a 20mm lug width is compatible with the Eterna Heritage 1939.43.46.1299. On Milano Straps you will find a curated selection of artisanal leather straps, NATO options, and technical rubber, all available in 20mm width and customisable according to your aesthetic and functional preferences.

How long does a leather strap last on a watch like this?

The lifespan of a leather strap depends on material quality, frequency of use, and care. A high-quality shell cordovan or box calf strap typically lasts 3–5 years with daily wear, developing a fascinating patina. Vegetable-tanned leather tends to age more nobly than chrome-tanned alternatives. Constant tension from wear, perspiration, and sun exposure accelerate deterioration; retiring a strap during summer months can significantly extend its useful life.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only