Strap for Spirit Automatic 42 Silver / Bracelet

The lug width is 22 millimetres, measured centre to centre of the attachment pins. This measurement is specific to the case geometry and determines strap compatibility. Verify it by placing a digital calliper perpendicular to the internal lugs without compressing.

Alligator leather in vegetable tanning represents the most aesthetically congenial choice, thanks to its natural texture which dialogues with the geometric rigidity of the case. Italian calf (Tuscan) is an excellent alternative for those preferring simplified maintenance and patina development over time. Shell cordovan is inadvisable due to its initial rigidity.

Each Spirit case is equipped with twin bayonet spring bars. Insert a flat tool under the spring from inside, pushing it downward until the release click. Extract the pin and repeat on the other side. Reinstall the spring by loading it inward into the new strap, ensuring both shoulders engage perfectly.

Yes, any professionally manufactured strap calibrated for 22 millimetres is compatible with the L3.811.4.73.6. We recommend artisanal straps realised with premium leathers and reinforced stitching, as strap construction quality dialogues with case precision. Always verify the measurement is 22mm, not 20 or 24.

A quality leather strap, subjected to moderate wear (5-6 days weekly), maintains structural integrity between 4 and 7 years. Vegetable tanning ages more effectively than modern chemical processes, developing patina and more elastic fibre. An FKM rubber strap maintains elasticity for up to 15 years without chromatic modifications.