What was the weight or weight range of the old Japanese Gold Star flathead tone rings? How did that compare to Ibanez?
I can't speak to the exact weight of the two rings. But having owned both, I can tell you that the Ibanez Artist tone ring is significantly lighter than the Gold Star flathead ring; the latter being closer to the normal 3 pounds.
Goldstar flat head tone rings of the Japanese versions were EXACT copys from Richards iconic prewar 75 he bought from JD. Both in dimension and weight and alloy
This verified with Richard and the man who made the tonerings