The all-in-one brass pocket pipe has lasted since the 1960s for one simple reason: its original engineering solved every practical problem a pocket pipe has, all in one machined brass unit. That blueprint — bowl, captive lid, built-in poker, stash chamber, and tar trap — was set around 1968 by Phil Jergenson's Proto Pipe, and it's still the foundation of modern builds like the Shaka Pipe from Punchbowl Pipes Hawaii.