METAL STEM & Plug in bowls
Costing $10 in 1947, from Harper=Wyman Company,8562 Vincennes Avenue, Chicago 20 , Illinois
Shank pushes into bowl of briar. It is claimed that juices could never reach the smokers mouth, all being trapped in the lower chamber of the shank no matter at what angle the pipe is held. Drained by pulling off the briar bowl
The aluminium shank has a rubber mouthpiece push fitted and held by a C clip
HARPER stamped on left hand side of lower chamber of shank.
Overall length is 5 inches (127 m/m)