Ok bought this pipe at an antique store. It is marked Kaywoodie Filter pipe. Pat. Pend. I haven't tried to disassemble it as I don't want to break it. My assumption is that. You unscrew the plug on the bottom but I am unsure. Anyone ever seen one? Know anything about these? Also wondering how old it is and how much it might be worth. I had never seen one before and paid more than I normally would, but it is so cool looking and I love that the stem and shank have the clover. Not planning to sell it just need some help with how to take it apart for cleaning.