rubber

I’ve looked at the usual sources, including the excellent Rubber FAQ on this forum and the parts catalogue, however haven’t been able to identify this rubber. It’s from the rear quarter glass. Maybe it’s not genuine, however it’s condition suggests it is. Any suggestions please?

When I took the driveshaft off of my '66 2000CS, I noticed that there were some large spaces in the center hanger that looked like they should take some kind of rubber bushing or mount. I have the earlier steel plate as a drive shaft coupling and not the big central bearing that they used from...