I saved this seat fabric from a 1975 Silver Anniversary 911 S that I had 20 years ago.
These front seat inserts are the original wool fabric. The passenger side (first pic) is in good condition though a little dirty - it could be used to restore a worn driver's seat. You might be able to get something from the driver side (second pic).
Price is $100 plus shipping from 98014. Hoping somebody can use this. Sierra Madre sells a red version of reproduction fabric for $283 per square meter.