This version of Elite appears to be a demo or prototype of the game released for the NES. Its gameplay would be essentially the same as the full version, but might lack certain features, levels, or might be otherwise incomplete. The 'NTSC' designation suggests a version intended for the North American market.  Details about the development and release of this demo are scarce, further research is needed to discover its creator and purpose.

Elite (NTSC Demo)

Eliminator Boat Duel (Europe)