This is an authentic IWC Big Pilot's brown calf leather watch strap that was removed from a Big Pilots Le Petit Prince IW501002 watch with case size of 46mm, however it will fit any Big Pilot's watch with a 22mm lug width.

Your watch strap is 22mm wide where it connects to your watch and is 18mm wide where it connects to your buckle. Your longer strap piece is 14cm long and your shorter strap piece is 5.5cm long.

I have given you photos of your watch strap from every angle. Please use them to add to this description.

If you are not sure if this will fit your watch or if you have any other questions then message me. I'm here to help you.