Strap for Speedmaster First Omega in Space Hodinkee 10th Anniversary

The 311.32.40.30.06.001 model features a 19 millimeter lug width, a specific configuration of the Speedmaster collection in 39.70mm for this generation. Unlike earlier models, this width requires straps constructed precisely for 19mm, with a maximum tolerance of ±0.5mm to ensure a flush fit and eliminate play between lug and strap keeper. Measure the lug width with a digital caliper positioned on the inner part, from shoulder to shoulder.

For the Speedmaster 311.32.40.30.06.001, we recommend dark brown alligator (aged cognac) as the ideal compromise between formal aesthetics and durability. If you seek historical authenticity, a black NATO is the choice faithful to Apollo missions. For those wanting maximum luxury, aged bordeaux shell cordovan develops unique purple undertones over time. Vegetable-tanned calf represents the contemporary alternative, aging naturally toward rich and characterful patinas.

The Speedmaster 311.32.40.30.06.001 uses an internal spring bar system. Position the watch with the dial facing downward. Using a flat-blade spring bar tool, insert the sharp tip into the lower hole of the lug to decompress the internal spring. Once the spring is removed from its seat, you can fully extract the old strap. Repeat the operation on the other side. Insert the new strap by aligning the holes, reinsert the spring bar and verify it is completely secured.

Yes, provided it is constructed precisely for the 19 millimeter lug width. Universal 19mm aftermarket straps are fully compatible with your model. We always recommend verifying the specifications before ordering: some brands calculate width on the upper surface (less precise), others on the actual lug measurement (more correct). Our straps on milanostraps.it are constructed according to the 19mm nominal industrial standard.

A quality leather strap on a 39.70mm Speedmaster, worn daily, has an average lifespan of 3-5 years before requiring replacement due to stitching wear or leather fatigue at the buckle contact point. More noble leathers such as alligator and shell cordovan tend to last longer (5-7 years) thanks to their superior fiber density. Longevity extends considerably if the watch is worn occasionally or if the strap is rotated with alternatives (NATO, rubber). Regular maintenance—protection from excessive humidity and direct sun exposure—significantly increases lifespan.