These pipes are relatively pristine compared to my dad's pipes, by the time he recycled them. He was a chain pipe smoker, just after breakfast until bedtime, including his train commutes in "the smoking car" reading "the Trib" going and the "Daily News" coming home. Puff, puff. He used only one pipe at a time until it was not smokeable. Usually the briar split right up the bowl, often brim to near the bottom, so burning ash would almost escape. Then he'd go to a newsstand and buy a new pipe. Those pipes may have had some residual briar somewhere on the bowl, but the bowl was shot, integrity gone. In his language, the smokers of these autopsy pipes were "pikers" by comparison. Granger was his leaf. Anything else was fussy and unnecessary. TAD for him was a new pouch of Granger, never a can. I think pipes lasted for him about 18 months to two years, but I'm remembering back decades.