Strap for Olympic Pocket Watch 1932 Yellow Gold

The Omega Museum Collection 5109.20.00 has a lug width of 18mm. This specification is crucial for purchasing compatible straps: a 16mm or 20mm strap will not fit correctly. You can verify this measurement using a digital caliper, positioning it between the two anchor points of the pins on the case.

Alligator leather represents the noblest pairing for the 5109.20.00, as the regular texture of American alligator harmonizes elegantly with the warmth of yellow gold. Alternatively, European vegetable-tanned calfskin offers a refined solution that develops authentic patina over time, while cotton NATO fabrics allow a more sporty and deconstructed approach.

The strap is changed using a simple tool called a spring bar remover. Position the tool inside the lug, then apply gentle pressure to release the spring pin from the anchor hole on the case. Repeat on both sides, then insert the new 18mm strap by aligning the pins with the same holes. The procedure requires care to avoid scratching the gold case.

Yes, the 5109.20.00 is compatible with any strap manufactured to the 18mm specification, regardless of the strap brand. However, it is advisable to choose straps with construction quality consistent with the value of the timepiece: noble raw leathers, full-grain leather linings, and silk stitching ensure longevity and appropriate aesthetics.

Durability depends on the material and intensity of use. A quality alligator strap, worn daily, typically resists 3-5 years before showing significant signs of wear. Vegetable-tanned calfskin tends to last slightly less under intensive use conditions, but develops desirable patina. The standard warranty on custom-made Casati Milano straps is 18 months.