Description B Uhr 20 mm Custom Strap WWII No 492 Custom made from brown Calf Leather 20 mm B - UHR Strap by Jürgens Hand Made in Germany The original WWII German Luftwaffe design, wear length 170-260 mm This straps are created in the 30s for the German air force for German Pilot / Observer and Navigator watch in B Uhr size & design. Already rivet = for spring bar watches! We ship well packed in a registered airmail bubble envelope