Ralf is THE Star expert. Check out his site dedicated to them:
My guess is those are early 70's, given the thicker shells. As others have mentioned, that black paint is not factory. However, it isn't uncommon for some vintage MIJ owners to paint, or seal the interior of the shells.
That wrap could be Tiger Pearl, looks faded...who be cool to see it after some treatment. I own a Star Tiger Pearl kit, mine has 3 ply shells with re-rings.
Cool kit, well worth putting time and energy into restoring it. Very cool all badges are present.
Cheers.