Yes, there is a double grade stamping on this pipe. Why that is so I can only speculate, Paolo Becker no longer being with us. My guess is it is a combination of a rather superlative blast and a large, beautiful shape. I think Paolo was proud of the result here. The size is at least a Grp. 6, with a wide-open draw. The shape harkens back to the pipes from Ulm, Germany. Many of those had long stem. Ben Rapaport deals with them in one of his many books that chronicle the history of pipes.
6.25” long, bowl 2.45” tall. Weight: 2.25 oz., 64 grams.