Just from the profile and stem, it looks like a Dr. Grabow, what is now marketed as a Big Pipe, but it
seems unlikely that Dr. Grabow would sell a pipe without its stamp unless it were done for some
other company. The only Big Boy outfit I know of is a burger chain, but that seems like an unlikely
outlet for tobacco pipes. I see a stamp on the stem, but I assume that just says, "Big Boy," though
I can't read it. But that stem has definite Dr. Grabow resemblances.