NTF2 Test Cartridge Nintendo NES
This seems to be the most commonly found NES Test Cartridge as it was used in conjunction with the NES Test Station. They seem to be slightly more abundant than their yellow colour cousins.
NES test make the system hardware and accessories run through tests to make sure that internal and external equipment all work properly. Testing Video RAM, colors, control ports, Power Pads, joysticks, etc.
Two completely different versions of this cart exist, although the labels remains identical.
This seller has seven Game Boy Protoypes. All are a bit more than they would fetch at open auction. He has some nice rarities as well.
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