a couple a years ago... a piece of stone/concrete was raffled off among the people that renewed their yearly subscription to "The Subcommittee." It was from a U-boat Pen in France (I assume). Does anyone know where I could purchase an item like that? Is there a gift shop at one of the U-boat Pen sites? I 'm a collector of all kinds of things. Last Christmas my Father-in-law gave me a "Piece of the Berlin Wall", it is framed with a felt pouch and papers of authentication. He made the frame/box. That sparked my interest in the U-boat pen item again.