There's actually quite an interesting history of this game, it was part of a huge lot of games I bought years ago that originates from a swedish distributor. The lot contained mostly Colecovision games (some that I sold to frax who is a member here), some Atari games (none this rare) and a Eprom sample from Activision of the game Decathlon to Commodore 64 from 1984 (no idea if it's valuable, but I rather keep it as I collect Commodore 64 games)