We have a member listing some high quality repros of unrealease Colecovision Atarisoft prototype carts. Here is a link to Moon Patrol but he has many more:

http://www.chasethechuckwagon.com/it...tem=0000005855

More awesome stuff getting listing on the Chuckwagon. He lists this kind of stuff regularly and it can be found no where else right now -- only on the Chuckwagon.