I collected for almost three decades, been published, ran websites, been interviewed within the hobby, most of my collection never had COA's due to stuff being bought, gotten in person or thru the mail, there are several dealers out there that don't believe in COA's, there is plenty of ways online to do research if you have questions about the autograph, I am pretty respected and confident in what I list
It is just the fact that that is your word. For me, someone who has never heard of u before, that sounds like a farfetched tale and for me to be comfortable with bidding there needs to be a coa also if I was going to sell it for a good price I would need a coa sorry but yeah.