I went to an estate sale yesterday and bought a 10 pipe round rack with tobacco jar, along with the rack came 3 pipes 2 no name junkers which I left. One of the pipes was marked with WDC in a triangle which is a Willam Demuth Company brand. The pipe is a Royal Demuth, imported briar root 30. On the bottom is marked filter pat'd 1934. Can any one tell me when these pipes were sold and by whom?