Just received a Dunhill I won on eBay yesterday. It's a 1932 production sandblasted Double Patent Shell Briar series finish, "LB" shape stamped or "Large Billiard". It's about a group 4 in size but not stamped as such. They didn't stamp group sizes in the 30's. Dunhill used to sub grade their LB pipes into different sizes in the 20's and 30's, an 8 being the larger size LB. The sandblasting pattern is really nice, you can see a craggy deep ring all the way around. This isn't a flaw or crack, but was a soft ring in the briar that the sandblasting removed. This isn't just rare but just gorgeous in my opinion. Just about as beautiful as it gets.