Tried that, local R-M guy said he couldn't help (?) but called his other store and they came back with the '67 red.
I've since pulled paint company #s for Q1 for 6 systems, and I'll try that I guess face-to-face with them.
Maybe they don't take a phone call for the info seriously, even though I'd be buying the material from them.
This was so much easier when I managed shops and had a great painter & jobber!

(I still have cans of R-M left over from previous restorations.)