These are parts from an antique 1920s barley twist cast iron & brass floor lam p. This was roughly a 5 foot lamp when taking into consideration the measurements of all the pieces. It is unmarked other than the number 100 on the underside of the base as well as a couple of other numbers that I cannot make out. There is general age wear and patina. The top socket holder and sockets are still present, however, the top piece of it is missing and so is the finial. Great for restoration and/or a rebuild! See photos for more details and feel free to ask any questions.