Hey I apologize if this is the wrong area, but I am new to the forum and don't know much about atari stuff so not sure what we have, so hoping someone could shed some light on it. A friend of mines dad worked with a guy who used to work for atari or something to do with system design in the 80's. The guy gave an entire box of atari stuff to my friends dad like 20 years ago and one of the cartridges he said could be a prototype, he couldn't remember though but gave a whole box to his dad and his dad don't remember what he said about what it could be. My friend was going through the stuff and found the cartridge and asked if I knew anything about it. I have an extreme limited knowledge of atari so was of no help. The backing is different than the other cartridges and it has a sticker that says "pilot 12-1-80 return to ted kahn".Has anyone seen anything like this before. The system with it no longer works, but even if it did if I put the cartridge in how would I tell if its anything special. Thanks in advance for anyone's help, it is greatly appreciated. If its absolutely nothing I apologize for wasting your time.