Authentic IWC 20 mm watch strap for 16 mm ardillon (tang) buckle.
Genuine leather, black, marked with the IWC logo| INTERNATIONAL | SWISS MADE | 20.
The strap came WITHOUT ANY BUCKLE – a generic unmarked buckle can be provided upon request.
The short piece is ca. 70 mm, the long piece is ca. 120 mm.
New, never fitted to a watch.