Magnavox Odyssey 400 gaming system from the 1970's with owners manual.  Tested and works.  There are POTS on the circuit board for adjusting objects on the screen.   These adjustments were required to produce the proper looking image.  Requires a proprietary RF box (not included) to hook up to a TV.  If you do not have this use the "paperclip trick" from the internet.  Does not include AC adapter but  It works with 6 "C" batteries (not included).  Item is in good condition for its age but can use a good cleaning.  All sticks and knobs appear to work and do what they are supposed to do during the games.  Manual has some writing and marks on it.