Al, the Royal Flush Grade is the highest grade pipe made by Becker, pretty sure this is a collaboration effort between Fritz and Paulo Becker but won't know until I have it in hand. Becker pipes came simply marked Becker then 1-4 Spades, 1-4 Clubs, 1-4 Hearts and finally the Royal Flush marked with a Spade, Club, Diamond and Heart. The single stamped grades were discontinued in 1991 along with the Spade Grade save for select 4 Spade Grade not often encountered. As you can probably tell I'm as pleased as could be to have picked up this pipe in one of my favorite shapes, regards.
banjo