Strap for Speedmaster Broad Arrow 1957 Yellow Gold / Silver

The lug width is 20 millimetres. To verify it, use a digital calliper measuring the internal distance between the lateral pins of the case, from shoulder to shoulder of the lug. This dimension is essential for ordering compatible straps without resorting to structural modifications.

For 18k yellow gold we recommend cigar brown alligator (vertical grain that reflects the metal's light), vegetable tanned calf in cognac tones (develops golden patina), or shell cordovan in burgundy for formal occasions. Avoid cool tones such as grey or blue, which do not dialogue with the chromatic temperature of gold.

The strap change is accomplished by removing the lateral pins (spring bars) using a dedicated tool. Gently press the internal spring of the pin, extract it from the seat on the case, and proceed with the installation of the new strap. If you are not experienced, the Casati Milano atelier offers a quick replacement service with personalised advice.

Yes, all straps with 20mm lug width are compatible with this model. MilanoStraps offers a complete collection of artisanal straps certified for your chronograph, customisable in leather, initials and buckle type (classic or deployant).

A quality vegetable tanned leather strap, with proper maintenance (protection from stagnant water, rapid drying), maintains structural integrity for 4–6 years. Alligator and shell cordovan, being more noble, can last 8–10 years. Casati Milano atelier guarantees 18 months on all straps produced, with the possibility of regenerating aged leather.