Strap for Richard Lange Jumping Seconds White Gold / Black

The A. Lange & Söhne Richard Lange 252.029 has a lug width of 20 millimetres. This measurement is the standard for this family of Lange timepieces and determines compatibility with aftermarket straps. To verify correctly, use a digital calliper to measure the distance between the strap attachment points on the case, from the inner edge of one lug to the opposite side.

For the 252.029, an alligator leather strap in dark brown remains the classical choice, as the fine grain of the leather does not visually compete with the white gold and maintains the austere aesthetic of the dial. Equally valid is shell cordovan in burgundy tone, which develops a unique patina with age, or vegetable-tanned calf in caramel for those preferring a slightly warmer approach.

Changing the strap on the 252.029 requires specific tools: a spring bar tool to carefully compress and remove the springs that secure the strap to the lugs, avoiding scratching the white gold case. For luxury watches such as the 252.029, it is advisable to entrust the operation to a specialist watchmaker who possesses professional tools and experience to maintain the integrity of the case.

Yes, provided the aftermarket strap is constructed by specialised artisans and has a lug width of exactly 20 millimetres. Straps made by Casati Milano, for instance, are hand-stitched using selected leathers (alligator, shell cordovan, vegetable-tanned calf) and guarantee construction quality comparable to original straps, whilst offering greater aesthetic versatility and personalisation.

The lifespan of a leather strap depends on frequency of use, type of leather and climatic conditions. A high-quality alligator or shell cordovan strap lasts approximately 4–7 years of regular use. Vegetable-tanned leather ages more rapidly but develops a fascinating patina. With proper care (avoiding excessive moisture, accumulated dirt and permanent creases), longevity increases substantially. Casati Milano guarantees 18 months against manufacturing defects.