I don't question your honesty but I also don't understand your answer. There's "proof" (Howard gave it to me.) There's "provenance" (I bought it from the guy whose father got it from Howard.) There's "suggestive evidence" (it's the same style of Christmas card Howard was known to send. Maybe Bob Maheu got one.) To simply provide a COA and a guarantee seems to me to say that you will return the money if the buyer can prove that it is a fake. Just curious.