Strap for Seventies Chronograph Panorama Date Ruthenium / Alligator / Folding

The lug width of the Glashütte Original Seventies 1-37-02-01-02-50 is 26mm. This dimension represents the exact thickness between the inner shoulders of the two lugs positioned at the extremities of the 40mm case. It is essential to verify that any strap intended for this model features a lug width compatible with this measurement to ensure stability and aesthetic coherence.

For the Seventies 1-37-02-01-02-50, we recommend alligator straps in cognac or black for formal elegance, calf leather in vegetable tannage with a tobacco patina to amplify the vintage character of the satin case, or FKM rubber in anthracite for daily sports use. Your choice depends on the context of use and personal colour preferences, whilst maintaining the 26mm lug width as a technical requirement.

To change the strap, position the watch on a soft cushion or anti-scratch mat. Locate the spring bar (tiges de ressort) situated within the lug: use a specialised tool to gently compress the spring bar and slide it out from the lug shoulder. Repeat on the opposite side. Insert the new strap by threading the pin into the upper lug shoulder, compress the lower spring bar and secure the positioning. This procedure, although straightforward, requires care to avoid scratching the case: entrust this task to a professional if uncertain.

Yes, it is possible to use aftermarket straps compatible with a 26mm lug width. Milano Straps offers a specialised collection of artisanal leather straps, including alligator, cordovan and technical rubber, all available in 26mm width and ready for installation. Mechanical compatibility is guaranteed by compliance with the lug width standard; we recommend selecting materials of elevated quality to preserve the aesthetic integrity of your Seventies.

The longevity of a leather strap depends on the material quality, frequency of use and maintenance standards. An alligator or quality calf strap withstands 3-5 years of daily wear before structural degradation becomes apparent. Vegetable-tanned leather develops an evolving patina which, if maintained with periodic treatments using natural waxes, extends functional life. FKM rubber, as a technical alternative, maintains structural integrity for 4-7 years. Replace the strap when leather thins near the passant or when the buckle exhibits visible defects.