Up for sale is a extremely rare special order chocolate brown with cream stitching and rose gold rivets IWC big pilot strap.  The strap is 22mm at lugs and 18mm at buckle end. This came off my St exupery perpetual rose gold big pilot as I decided to go with a different strap.  Please make sure this strap will fit your watch as there are no refunds. would rate this strap 85% with plenty life left.  Please see pics for details.  hipping is $7 CONUS.