Metal wire harness clip, firewall and maybe other locations

Thanks guys. I had no luck looking through my older paper catalogs (year One, Layson, Paddock, Restoration Specialty Supply) or current on-line catalogs.
That said, I also had no luck in finding a p/n in the '67 or '68 parts books. It may be there - I just couldn't find it. It makes it that much harder to find stuff like this.

Just spoke with Tom at R/T. He doesn't have any left.