EDIT - Hold pending a potential trade for Activision stuff I wanted
This is factory sealed and in near mint condition. You would be hard pressed to find a better copy. It is the US NTSC version. $35 shipped within the US only, Paypal preferred.
I would trade for Activision patches or good condition complete Activision 2600 games, or other 2600 era Activision stuff.
Let me know if there are any questions.
Thanks for looking.