Strap for Tonda 1950 Galaxy Set

The lug width is 20mm. This dimension is standard across the Tonda collection and is critical for ensuring proper fit in the side lugs of the rose gold case. Narrower straps would create excessive play, whilst wider ones would not fit within the lugs.

Alligator leather in vegetable tanning represents the most cohesive choice, as its orderly grain dialogues with the quadrant's geometry. Shell cordovan offers an aristocratic alternative with profound patina development. English calfskin provides superior comfort for daily wear. We recommend against rubber on this timepiece, reserving it for seasonal sports contexts.

Obtain two replacement spring bars compatible with 20mm lugs. Position the watch with the side lugs facing upward, compress the existing spring bar using a dedicated tool to create space, remove the worn strap, and insert the new one by pushing it until the spring bar catches. A swift operation, but exercise caution to avoid scratching the rose gold case.

Any strap with a 20mm lug width is technically compatible. Milano Straps offers collections dedicated to this width in leather (alligator, calfskin, shell cordovan), textiles (NATO, canvas), and structured rubber. Verify that the strap thickness sits between 3mm and 4mm to prevent binding with the lugs.

A quality leather strap (alligator, shell cordovan, English tanned calfskin) typically lasts 3–5 years with daily use, extending to 7–8 years with seasonal rotation. Longevity depends upon usage intensity, ambient humidity, and maintenance. Periodic conditioning with pure beeswax substantially prolongs both the aesthetic and functional life of the strap.