Strap for Orion 33 White / Closed Case Back

The lug width of the Nomos Glashütte Orion 323 is precisely 17 millimetres. This rather uncommon measurement is dictated by the proportions of the 32.80 mm case. To verify your lug width accurately, measure the internal distance between both lugs using a digital calliper.

For the Orion 323, we recommend alligator leather with vegetable tanning, which mirrors the minimalist elegance of the case. Alternatively, Italian calf leather with natural patina offers exceptional value and ages beautifully over time. For more informal daily wear, FKM rubber with crocodile-grain embossing combines practicality with refined aesthetics.

To change the strap, use a spring bar tool (a small fork-shaped implement with slots). Gently insert the tip into one of the lateral holes beneath the case lug, applying light pressure to release the internal spring bar. Lift the old strap away, then position the new one and re-engage the spring bar into both case lugs. Never force: fluid, deliberate movements protect the case.

Any aftermarket strap manufactured specifically for 17mm lug width is compatible with your model. We recommend purchasing exclusively from specialist craftspeople who test compatibility against your case's lug holes and internal diameter. Generic 17mm straps may have tolerance issues. On milanostraps.it, you will find a curated selection of straps verified for your specific timepiece.

Leather strap longevity depends on material grade and wearing pattern. Vegetable-tanned alligator, worn daily, retains structural integrity for 3–4 years before replacement becomes necessary. Italian calf typically lasts 2–3 years whilst developing a captivating patina throughout its lifespan. Direct sunlight exposure and humidity accelerate degradation. Conditioning the leather annually with watchmaking-specific creams significantly extends strap life.