Strap for Admiral's Cup 42 Chronograph Blue

The Corum Admiral's Cup A984/02987 features a lug width of 21mm. This is a non-standard measurement that requires bespoke straps. Correct measurement is taken internally between the lug shoulders where the strap meets the pins.

The optimal choice depends on intended use. For formal contexts, we recommend alligator leather with vegetable tanning in black or dark brown, paired with a stainless steel deployante. For marine and sporty use, vulcanised FKM rubber ensures excellent saltwater resistance. Shell cordovan offers an elegant solution with a naturally developing patina. NATO straps in cotton provide ideal daily informal wear.

Strap replacement requires removal of the spring bars located at the case sides. Specialised tools compress the internal spring mechanism to withdraw the bars from the lug holes. Once removed, insert the bars into the new strap and reinsert into the case holes. If you lack the proper tool, professional watchmaker assistance is recommended to prevent case damage.

Yes, but it is critical that they are specifically manufactured for 21mm lug width. Standard universal straps (typically 20mm or 22mm) will not fit with the precision this timepiece demands. Milano Straps offers a curated collection of 21mm artisanal straps in alligator, calf leather, shell cordovan, NATO and rubber, fully customisable to your aesthetic preferences.

A quality leather strap (alligator, calf, shell cordovan) with vegetable tanning maintains full functionality and aesthetic appeal for 5-10 years under normal conditions. Longevity depends on intensive use and environmental factors such as humidity and sun exposure. Leather straps develop a natural patina, making each strap uniquely personalised over time. With regular care—gentle cleaning and natural balm application—lifespan can be significantly extended.