Question Author
I thank you all for your help. Apparently, seller has been suspended. OH has spoken at length to ebay who state that they will guarantee he gets his money back. He is instructed to send item back at which point his money will be refunded (that's a bit of an **** because item is currently with silver expert some 20 miles away). OH is quite upset cos now he cannot buy me a christmas present cos his cash is tied up by Mr Fraudulent Assay Mark.
In retrospect, I bought an item from this seller last year and it wasnt what it was said to be, but it cost me so little money I cba to do anything about it. He is obviously a faker and a charlatan. Had I known Mr BM was buying from this seller I might have had something to say, but he was doing it secretly.
HC gets best answer because that was v useful for OH to call - but all of you really ought to get "very bloody helpful". Thanks.