North American retail version Nintendo NES full set including Tetris and 852-in-1 pack

This is the Original, not the Mini or Classic. Despite being released in 1985 and being 41 years old this year, it is in top-tier condition with no discoloration, exceptionally clean exterior, and almost no scratches. Various stickers are perfectly preserved, and it operates flawlessly without any functional issues. This is the original US version (60Hz) with CTWC tournament specifications. It is the very Tetris machine played by the "American teenager who cleared Tetris" featured in the news a few years ago. Unlike the European version with a different Hz, this is the model actually used in the Classic Tetris World Championship. A notable feature of this product is that while many units have had their cartridge terminals replaced with aftermarket parts due to the NES's chronic issue of terminal stretching, this model retains the original terminals, which possess excellent elasticity. Regarding cartridge recognition, due to the age of the Tetris pack, it may occasionally fail to be recognized because of oxide buildup on the copper contacts. This is a characteristic that has existed since its release, so gently removing it with an eraser...