The Moon Landings spawned a large number of souvenir-makers to make and sell medals (your item is a "medal", rather than a "coin"). Most are anonymous, but the hallmarks stamped into this piece imply it might be made of precious metal, and would also likely indicate the manufacturer. Is there any chance of getting a clearer image, particularly of the hallmarks?
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis