Strap for Kleine Lange 1 Pink Gold / Blue MOP

The lug width of the A. Lange & Söhne Lange 1 model 113.041 is precisely 19.00 mm. This is an unusual dimension compared to contemporary standards (18 mm or 20 mm), determined by the specific geometry of the pink gold case measuring 36.10 mm in diameter. This proportion reflects Glashütte manufacturing principles: it is not arbitrary, but rather the result of weight distribution and the diameter-to-thickness ratio of the case.

Alligator crocodile leather (Nile or Mississippi) is the historical and most appropriate choice: its fine, uniform grain complements the architectural lines of the case without visually competing with the asymmetrical dial. Alternatively, vegetable-tanned calf leather (Horween or Tannerie d'Annonay) offers a natural patina that evolves over time, creating chromatic synergy with the natural oxidation of pink gold. Quality FKM rubber is legitimate for daily wear, whilst shell cordovan is inadvisable for this specific case.

The Lange 1 113.041 strap is secured by standard spring bars, visible from the sides of the case. To remove it, insert a flat tool (spring bar tool, available from watchmakers) beneath the pin from the outer side, press gently toward the case centre to compress the spring, and pull the strap outward. Repeat on the other side. The operation requires a delicate touch and proper tools: it is advisable to consult a professional watchmaker if you are inexperienced, to avoid scratching the pink gold case.

Yes. The 19.00 mm lug width of the 113.041 permits the use of compatible artisanal aftermarket straps, provided they strictly respect the measurement. A quality aftermarket strap (made from authentic alligator or vegetable-tanned calf leather, with hand stitching) can equal or exceed factory straps in quality. We recommend verifying with the manufacturer that the strap has been crafted with tight tolerances (19.00 ± 0.2 mm) to prevent lateral shifting on the case.

Authentic leather strap (alligator or vegetable-tanned calf) typically lasts 3-5 years of regular daily use, with variability depending on exposure to perspiration, moisture, and UV light. Vegetable-tanned leather ages more gradually but aesthetically (developing patina), whilst alligator tends to harden progressively. The standard 18-month warranty covers manufacturing and tanning defects; beyond that period, wear is natural. To extend lifespan, it is advisable to rotate straps and store them in dry environments. Replacement every 4-5 years is normal for a regularly used watch.