Tetris NES

[Stark]

Says with dust cover but it sure looks like the box to me.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1940961651&category=11033

[Raedon]

Tengen, of course, had to include dust covers with their products. Tengen's covers were thick paper like the one you see. I have yet to find a Tengen dust cover in the wild.