Dwain, another possibility is that the original menuki were taken out and a solid gold casting was made of them. This aligns well with the poor job on the tsuka-ito wrapping. I know AOI deals in large quantities, but I find it hard to believe that nobody would have looked twice at the menuki. Its not a very good business model to sell your items for less than what they are worth. I hope I am wrong, but I have seen multiple examples of new cast menuki(even in gold). I have even seen this on AOI.