Tengen Tetris with Nintendo License

Unreleased Nintendo NES Proto LICENSED Tengen Tetris

The two lines “licensed by Nintendo of America inc” are worth a lot.
Why?
Do you know the story behind the two versions of Tetris for the NES?
At the moment I don’t have the time to write nor my English is good enough. I will not post a Wiki link, instead I suggest you to check this interesting page on AtariHQ and I’d love if Link or someone else could write a full article on this extreme item.

Other stuff:
1994 ATARI JAGUAR DEMO TAPE
Atari Jaguar: Alpine Board 2MB relisted again
Nintendo World Class Service Big Metal Advertising Sign
Game Boy store kiosk
Neo Geo Pocket Color store kiosk
VIP GUEST 1990 Nintendo WORLD CHAMPIONSHIPS Sticker
GD Writer & DTL-T10000
If x000 usd aren’t a good reason to buy a VCS and try this cart, then this cart might already be tested and it’s not the number 2