A. Lange & Söhne
Lange 1 101.321— lug 20mm

The lug width of the A. Lange & Söhne Lange 1 reference 101.321 is 20mm. This measurement is taken internally between the two lugs of the case using a caliper positioned in contact with the case itself. All standard 20mm straps are compatible with this model.

For the yellow gold version of the Lange 1 101.321, an alligator belly strap in cognac or bordeaux represents the most harmonious choice in terms of color and material. The natural grain of the scales complements the complexity of the dial, while warm tones enhance the luminosity of the 18-karat yellow gold. Black box calf is the most formal and classical alternative.

Strap replacement on the Lange 1 101.321 is performed using standard 20mm spring bars. With a dedicated pointed spring bar tool, compress the spring bar from inside the lug and remove the strap. The operation requires care to avoid scratching the yellow gold case: using a soft cloth under the case and a plastic or brass tool is strongly recommended.

Yes, any strap with a 20mm lug width and standard spring bar attachment is compatible with the Lange 1 101.321. Milano Straps offers a selection of artisanal 20mm straps in alligator, calf, rubber, and other materials, crafted with customizable lengths and stitching. A deployant clasp in gold or PVD gold is the most suitable pairing to preserve the aesthetics of the yellow gold case.

The lifespan of a leather strap depends on leather quality and conditions of use. A high-quality alligator or calf strap, used with care and alternated with other straps, maintains structural integrity and appearance for 3-5 years. Prolonged exposure to sweat, moisture, and UV rays accelerates deterioration: rotating between two or three straps and storing them away from direct light is the correct practice to maximize their useful life.