Hello everyone. I am trying to figure out if this is a Pac Man prototype for the Intellivision. I purchased it in a lot of white labeled Intellivision games and it stuck out to me because it is the only white label cart that I have that has the back screwed on. It is screwed on with oversized silver screws that stick out the back about 1/4 inch. When I unscrewed the screws I noticed that the board says "REV. PROTO" at the top. The rest of the board looks pretty standard so I am not sure if it is really a prototype or not. Please help!
I am unable to upload the pics as they are too large but if you want me to send them to you please PM me. Thank you.