Nes Tengen Tetris?

[Uzumaki]

Someone at assember had a link to another forum that looks interesting:

 

http://www.nintendoage.com/forum/messageview.cfm?catid=29&threadid=83705

 

Thread was last September and the picture matches.

 

So the only issue left is if the seller stole picture and is trying to pass it as his own. But the proto itself is legit.