If you have bid on the "Paul Fox Cup Cups Set Original Auhentic Danny Dew" currently being offered on eBay (# 6113518538), you might want to rethink your bid.
I received the following e-mail from the seller:
"Well, yes, each of these cups is "stamped" with the Paul Fox initials in the inside on the bottom."
I checked with Barry Schorr on this one. According to Barry, who has bought and sold many sets of authentic Danny Dew cups, Danny did not hallmark his cups. These are most likely Jeff Busby cups. I have informed the seller of this, but the auction is still running.