This authentic Omega black rubber watch strap is part number 98000366. It was made for the 45.5mm second-generation Cal.8500 Planet Ocean and will fit some Omega Planet Ocean 45.5mm models.
The strap is 22mm wide at the watch end and tapers to 20mm at the buckle end. Both strap pieces are 10.5cm long. It is made from black rubber with black stitching.
There is some wear to the stitching, visible in the photos.
I have given you clear images of this strap from every angle to help you assess the condition before ordering. The strap in the photos is the exact strap you will receive.
If you are not sure if this will fit your watch or if you have any other questions, feel free to email me at Sales@TheWatchLink.co.uk. I'm happy to help!