Black and White "Pongish" Board

Not sure what game, Part #2605

Early black and white arcade game circuit board from the 70s, that we believe is probably a pong clone game.  The board is labeled 2605, but we couldn't find much information online on it.  Boards appears to be complete with some typical wear and dirt, but should be repairable.

Untested, but we're guessing not working due to its age.