Strap for Sixties Stainless Steel / Orange / Calf / Alligator / Annual Edition

The lug width of the Glashütte Original Sixties 1-39-52-13-02-04 is 18 millimetres. This dimension is measured at the innermost point between the two spring bar attachments. An 18mm lug width is essential to ensure perfect compatibility with the case and maintain the structural stability of the timepiece on the wrist without unwanted lateral oscillation.

The strap most coherent with the constructive heritage of the Sixties 1-39-52-13-02-04 is high-quality alligator, whose natural grain dialogues magnificently with the cushion case geometry. Alternatively, Hermès calfskin with fine grain emphasises the rationality of the design, whilst shell cordovan offers a solution with particularly rich ageing. For more casual wear, cotton or synthetic silk NATO straps add a discreet sporty element.

To change the strap on the Sixties 1-39-52-13-02-04, you need to use a spring bar tool (flat lever tool). Position the lever under the tension spring of the lug, gently lift to release the pin, and remove the old strap. Insert the new strap by aligning the hole with the pin, then press downwards until the spring engages completely. Check that the strap is firmly attached before wearing the watch.

Yes, any strap with 18mm lug width is compatible with the Sixties 1-39-52-13-02-04, provided that constructive tolerances are respected. However, it is important that the strap is manufactured to high precision standards: straps with loose tolerances can generate unwanted lateral oscillation and accelerate wear on the attachments. High-quality artisanal straps guarantee impeccable fit and constructive longevity equivalent to the timepiece.

The lifespan of a leather strap depends on intensity of use, climate and leather type. A high-quality alligator strap, used daily with regular maintenance, typically lasts 4-6 years. A well-maintained vegetable-tanned calfskin can last 3-5 years. Shell cordovan, thanks to its particularly dense fibre structure, can exceed 7-8 years. The natural ageing of leather adds patina and character: it is prudent to plan replacement before the strap wears excessively, to avoid damage to the case attachments.