Eterna · Contemporary

Strap for Avant-Garde Date Lady Two Tone / MOP / Strap

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

Lug width20 mm
Case diameter28 mm
Reference2940.53.61.1356
FamilyContemporary
MovementETA caliber 2671 hours, minutes, seconds | date
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 Contemporary 2940.53.61.1356

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Contemporary 2940.53.61.1356, seen from the bench

The Eterna Contemporary 2940.53.61.1356 embodies contemporary watchmaking from Grenchen, combining Swiss mid-twentieth century heritage with essential lines and proportional case geometry. Powered by the ETA caliber 2671 manual-wind movement featuring hours, minutes, seconds and integrated weekly calendar, it delivers reliability and serviceability. The 28.00mm stainless steel case balances robustness with refinement, while the 20mm lug width ensures proper integration with compatible straps for daily wear.

Frequently asked questions

What is the lug width of the Eterna Contemporary 2940.53.61.1356?

The lug width of the Eterna Contemporary 2940.53.61.1356 is 20mm. This measurement represents the inner space between the lugs where the strap is inserted. It is essential to measure correctly with a calliper to avoid purchasing incompatible aftermarket straps.

What is the best strap for the Eterna Contemporary 2940.53.61.1356?

The best strap depends on your intended use and personal preference. For formal elegance, we recommend alligator leather or shell cordovan with vegetable tanning. For daily versatility, coloured calf leather in neutral tones. For sports or water use, NATO in cotton or technical rubber. The key is respecting the 20mm lug width to ensure proper fitment.

How do I change the strap on my Eterna Contemporary 2940.53.61.1356?

To change the strap, obtain a spring bar tool and gently position it in the lateral grooves of the spring. Press downward to release the lug, then carefully remove the old strap. Insert the new 20mm strap, aligning the holes with the springs, then ensure the springs click into place. This is a straightforward operation that, if done carefully, does not require a watchmaker's intervention.

Can I use compatible aftermarket straps with my Eterna 2940.53.61.1356?

Yes, absolutely. The Eterna 2940.53.61.1356 uses a standard 20mm lug attachment that is universally compatible with quality artisan straps. Milano Straps offers a dedicated collection for this lug width, featuring carefully selected materials (alligator, calf, NATO, rubber) that maintain aesthetic coherence with the Contemporary's formal geometry.

How long does a leather strap last on a watch like the Eterna Contemporary 2940.53.61.1356?

Durability depends on frequency of use, environmental conditions, and tanning method. A vegetable-tanned leather strap used daily typically lasts 3-5 years before requiring replacement. Constant exposure to moisture, salt water, and perspiration accelerates ageing. The natural patina that develops over time is a sign of conscious use, not degradation. Regular maintenance—gentle cleaning and occasional conditioning cream—significantly extends strap 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.

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