Yep, Pong clone. Maybe check the Pong Clone Thread, to see if it's in there:
Probably the most recognized arcade game in the history of arcade games! Atari Pong! The game that spawned a thousand clones...or so it seems. Let this be a repository for any and all Atari Pong Clone pics and info! Post up pics of your Pong clone or any other relative info and links...
forums.arcade-museum.com
It would be nice to have a clearer picture of that plate with the printing on it.
Also, that looks like either a Motorola XM-501/701, or a Wells Gardner 19v1001/22v1003 black and white monitor. (If it's a 23", it's a little more sought after, but they all are valuable for use in other b/w games.) Worth it for the monitor alone, if you could get it for cheap.