What's this seal called

Yup, just saw some of those for sale on Ebay yesterday, I think.
Or was it one of the restoration site's?

Not sure, but they are out there.

I seem to remember 90 bucks for the pair.

Wait, you are talking about the rubber moulded piece that goes on the body right in front of the quarter glass opening?

If so, they are called"QUARTER PANEL DOOR JAM PILLAR SEALS" here.
https://www.jimsautoparts.com/weatherstripping.htm