Strap for De Ville Co-Axial 38.7 GMT Yellow Gold / Blue

The lug width of the De Ville 4633.80.33 is 18 millimetres. This measurement has been calculated in proportion to the case diameter (38.70mm) to ensure aesthetic balance and structural stability. To verify it with precision, use a digital calliper measuring the space between the lugs of the case: the result must fall between 17.8 and 18.2 millimetres for optimal compatibility.

The best choice depends on the context of use. For formal occasions, black alligator amplifies the elegant dimension and creates contrast with the yellow gold case. For daily wear, vegetable-tanned calf offers a soft grain and a patina that evolves over time, creating an emotional connection with the watch. For less formal environments, an FKM rubber strap guarantees practicality without aesthetic compromise. A versatile solution consists of owning at least two straps – one black alligator, one brown calf – to adapt to different contexts.

To change the strap you need a Spring Bar Remover, a fork-shaped tool that allows you to compress the small metal springs (spring bars) located at the ends of the lugs. Insert the tip into the slot present on each side of the case, exert light pressure and simultaneously withdraw the lug from the holes. With the new strap, repeat the operation in reverse, ensuring that the springs click firmly into place. If you do not possess the tool or prefer to avoid the risk, a specialised craftsman can perform the operation in a few minutes at a reasonable cost.

Yes, provided the lug width is exactly 18 millimetres. Aftermarket straps of artisanal quality – such as those proposed by Milano Straps – guarantee mechanical and aesthetic compatibility if made with attention to the specific parameters of the model. When ordering online, verify that the seller confirms compatibility with your specific model and offers a warranty on manufacturing defects. The absence of brand marking on the lug does not impact functionality, but guarantees greater aesthetic freedom and often lower prices compared to original Omega straps.

The lifespan depends on the material and conditions of use. A high-quality alligator strap with vegetable tanning of artisanal quality lasts on average 3-5 years with daily wear, developing a patina that increases aesthetic value. FKM rubber offers greater durability (5-7 years) but less aesthetic evolution. Factors that accelerate wear include frequent exposure to direct sunlight, persistent humidity and acidic sweat. Regular maintenance – cleaning with a damp cloth, conditioning every six months with specific creams – significantly extends the useful life. When the strap begins to show cracks or structural laxity, it is time to replace it to preserve the integrity of the case and the overall appearance of the watch.