Nivada Grenchen
Super Antarctic 32039A17— lug 20mm

The lug width of the Nivada Grenchen Super Antarctic 32039A17 is 20 millimetres. This dimension is typical of sports and military instruments from the 1950s and ensures compatibility with strap manufacturers specialising in this specific size.

For the 32039A17, we recommend a vegetable-tanned leather, alligator, or shell cordovan strap for everyday refined use, or a fabric NATO strap in ballista weave or natural rubber for marine and sporting applications. Your choice depends on context and colour preferences.

To replace the 32039A17 strap, you will need a spring bar tool. Position the tool beneath the case lug attachment, apply gentle pressure to open the spring bar pin, remove the old strap, and insert the new one by aligning the holes with the case shoulders. The operation typically takes 2-3 minutes per wrist.

Yes, any strap with a 20 millimetre lug width is compatible with the 32039A17, provided that the attachment finishes are standard (1.5-1.8mm pins). We recommend artisanal straps from specialised suppliers to ensure construction quality and durable materials.

A quality leather strap (alligator, shell cordovan, calf) lasts 5–10 years with routine maintenance (occasional cleaning, annual conditioning). Intensive sporting or marine use reduces durability to 2–4 years. NATO fabric straps last indefinitely if rinsed regularly with fresh water.