Rolex
Oyster Perpetual 34 6664— lug 19mm

The Rolex Oyster Perpetual 34 ref. 6664 has a lug width of 19 mm. This measurement is specific to the Oyster case of this 1950s generation and should be verified with a calliper between the lugs before purchasing an aftermarket strap.

For the 6664, vegetable-tanned alligator or matte calf leather straps are the most appropriate choices, in keeping with the vintage aesthetic of the watch. A strap with a shaped 19 mm end ensures a precise fit and a clean transition between lug and strap.

Replacing the strap requires a watchmaker's spring bar tool. Gently lever the spring bar inside the lug to release the original strap, then fit the new one with the spring bars correctly seated. It is advisable to have this done by a watchmaker to avoid scratching the case.

Yes. The aftermarket offers straps with a 19 mm attachment compatible with the 6664. It is essential to choose models with a curved or flat end depending on the lug geometry, and to ensure the buckle does not exceed 16 mm for a proportionate result.

Longevity depends on the material and maintenance. A quality vegetable-tanned leather strap, with daily wear and periodic conditioning, can last between two and five years. Shell cordovan and alligator tend to have a longer lifespan due to the density of the leather fibres.