Vintage Mach Rider Nintendo NES game cartridge. 5 screws visible on the back side, 01 lightly stamped on the rear sticker (?) All the games I have listed have a similar stamp not sure what that means. Programmable series.
The contact surface was lightly cleaned with windex and cotton. It was tested and did work however you may have to do additional cleaning or use a few times to be fully reliable.
All of these game cartridges were properly stored in a dry indoor location for many years until found recently.
I can include a black plastic sleeve if you want just let me know at time of purchase.
I am not the original owner of this so being sold as found.