Strap for 99.1

The lug width of the D. Dornblueth & Sohn 99.1 (7) ST is 22 millimetres. This dimension is determined by the proportions of the 42mm case and is standard for this model. To verify correct measurement, use a digital calliper positioned perpendicularly to the lugs, excluding the case shoulders and measuring the mid-point of the lug area.

For the 99.1 (7) ST, a vegetable-tanned Tuscan leather strap is recommended, reflecting the minimalist aesthetic philosophy of the case. Box-calf or smooth veal leather maintain visual purity without distracting from the skeletonised dial. Valid alternatives include heavy cotton NATO straps or natural vulcanised rubber, for those who wear it daily as an instrument rather than for contemplation.

To change the strap, use a spring bar tool or dedicated lug tool. Position the watch on a soft surface to avoid scratching the case. Insert the tool into the lateral hole of the lug and apply gentle outward pressure to release the suspension pin. Once the pin is extracted, the old strap detaches easily. Repeat on the other lug. For fitting a new 22mm strap, align the holes carefully and reinsert the pins with caution, avoiding excessive force that could damage the strap.

Yes, any aftermarket 22mm strap is compatible with the 99.1 (7) ST, provided the suspension pin diameter matches the standard (typically 1.8mm). Milanostraps offers a selection of 22mm straps specifically compatible, in Tuscan leather, NATO and rubber, ready for dispatch and customisable online according to your colour and construction preferences.

The durability of a natural leather strap depends on the tanning method and usage. Vegetable-tanned Tuscan leather, with regular maintenance (drying after moisture exposure, annual conditioning with natural balms), maintains structural integrity for 3–5 years of daily wear. If worn occasionally, the lifespan extends beyond 7 years. Patina and signs of ageing are desirable characteristics, testifying to the relationship between the watch and the wearer.