It has all the appearances of being a mint blank, termed a planchet, ready to strike but for some reason slipped by and made it into circulation. It will work in any machine that takes a regular penny. Since it is not struck, no telling how old it is! Weigh it and compare it to that of a real copper lincoln vs one of those new zincolns. My bet is it is fairly old and is solid copper! I have a couple of these in my coin collection for conversation pieces!