That looks like a very nice car. Apparently, if you keep the vinyl tops out of the sun, they hold up well. My 68 Firebird has its original vinyl top, and it looks like new.
I agree on the vinyl top. I've always said if they are installed properly and maintained properly they can & will last. People all to often just assume a vinyl top automatically equals rust. When I added the vinyl top to the LeMans everyone said it would rust out within months etc. The top we put on our 68 Firebird was on there for 10 years and when we parted it out I peeled it back and not ONE pinhead of rust anywhere. So again, I think if they are cared for meticulously they can last for years given they are installed properly from the get go!