I know that this is an old post, but for refference these are the chromes that sit on the bosses for the seatbelts below the quarter light windows on the FHC.
Paul

I'm fairly certain that the original type material is no longer available.
I used the heavy grained Woolies vinyl
https://www.woolies-trim.co.uk/product/ ... nide-black.
It is coarse like the original, but cloth backed. I think they will send you a sample if you ask.

Paul