$eriou$ buyer for Johns Manville 60's vintage weatherstrip

My car has a plexiglass rear window and used weatherstripping between the 'glass and body.
I recently found out what brand it was. OK, call me anal, but now that I know, I'd like to do it right.

I need 3/4" wide and 3/8" thick. At least a few rolls of NOS for this period correct restoration project.

The photos below are what the packaging looks like. It has no size on it, so you'd need to measure the width.

Check barns, garage shelves, basements, swap meets, old hardware stores, old auto parts stores, etc.
This stuff is from the 1960's.

PM me here. Thank you.
WTB - johns manville sponge rubber weatherstrip 1.jpg WTB - johns manville sponge rubber weatherstrip 2.jpg