This is a new one to me.Some of the parts are from later 70's, The tom mount has the ball type of "L" arm's Tama started that mount is about 1978.The lugs are from about the same year...
If you could post some photos of the edge's of the drums and a few of the inside shell.This would help pin point a year.
As far as i know Tama never used that finish on a RoyalStar set in the 70's.
Star made drums made by Tama before Tama was known as Tama in other word's Star badge drums were Tama drums.But that finish was out from about 1967 to maybe late 1970/
So your set could be a rewraped set maybe photos of the edges would tell me this....Mikey