Its PPG Global BC. Here is a link:
http://us.ppgrefinish.com/PPG-Refini...finish-System;
Aside from the color match, the Global also has the very fine metallic flakes that are correct. The others I have looked at have a more modern, larger flake in the paint. Also has that olive/gold tint that seems to have gotten lost in some other paints. I think I have some pictures of the my spray cards next to the untouched backside of a original painted door. it was so damn close to exactly the same.