So I know about how the "system" works, and I know they have a line named for having this system. What I'm curious about is if any Peterson pipes feature this type of carving in the shank apart from the "System" line. I recently examined a Peterson pipe at a local Tinderbox. I inspected the shank, and it appeared to be carved with the off centered draft hole and the well beneath it. If I recall correctly, though, it was one of the "Father's Day" line pipes. Are there many non-"System" pipes which feature the Peterson system? It's hard to properly word this question, but I think you know what I'm asking most likely. Any help is appreciated, I'm in the market for a new pipe very soon. Tough choice between a Stanwell, a Johs, a Savinelli and a Peterson right now.