Ok..i think i got one,i used Lincoln Resource as a reference. I matched it to dd05. What do you guys think?
Look up "master hub doubling" on this of which I think there are 3 varieties for the '72's. Personally, I don't see any DDO on this one.
based solely on the 72 I think it is #5 too but your other pics are too fuzzy to see anything that granular.