This is a cool little bagatelle style pinball game. It is a "Deep Sea Dive" pocket bagatelle game by Marx toys. The patent is from 1953. It appears to have been made before they started shifting production overseas in the 1960s.
You'd need a little larger pocket for this game. It is about 7 inches long, 2 inches wide and 1 and a half inches high. Overall, it's in very good condition. The tin lithograph background has lots of bright color and cool treasure hunting themed graphics. The clear plastic cover has no cracks or break, but does have some crazing on the high end.
One cool looking toy, and you can still play it too.