A. Lange & Söhne
Arkade 812.021— lug 18mm

The lug width of the A. Lange & Söhne Arkade 812.021 is precisely 18 millimetres. This dimension is critical: any aftermarket strap must have an 18mm width to ensure a perfect fit without friction or excessive play. To verify compatibility, measure the internal distance between the lugs of the case using callipers or a flexible ruler.

Alligator represents the most coherent choice with the Arkade's Saxonian spirit: the regular grain and aesthetic austerity of the leather harmonise with the case's discreet geometry in yellow gold. Shell cordovan offers superior density and durability for those practising outdoor activities. Smooth calf leather, with vegetable tanning, accommodates a modern approach without betraying the Dresden manufacturer's constructive values.

The strap is replaced by removing the spring bars that connect it to the lugs of the case. Use a specialised tool (lug punch or dedicated lever) to push the bar outward, sliding the strap out of the lugs. Proceed gently to avoid scratching the gold case. The new 18mm strap is inserted following the reverse procedure, aligning the holes with the bars.

Yes, provided the strap is certified for 18mm lugs and manufactured with superior materials. Straps produced by specialised ateliers such as Casati Milano guarantee perfect compatibility and artisanal craftsmanship. Avoid generic 18mm straps with loose tolerances: the risk is an imperfect fit that compromises the aesthetic integrity of the timepiece.

Longevity depends on the material, tanning method, and frequency of use. An alligator strap with vegetable tanning lasts an average of 5-7 years with daily wear, developing a patina that enhances its appeal. Shell cordovan can exceed 10 years thanks to the leather's density. Calf leather requires greater care but offers longevity comparable to alligator. Proper maintenance—regular cleaning, protection from excessive moisture—extends useful life considerably.