Seems like I should know what this is......it looks familiar.......but I can't come up with it. What do you folks think? I figure it's probably not worth anything....just a curiosity. The small end is solid, the large end is hollow. No threads anywhere, but, there is a small groove inside the large end. Almost looks like a keyway, but, I think it's too small for that and it's at a slight angle. Maybe an air bleed, oil, water, (or other fluid) groove? Found in the yard of a 100 year old house.