http://www.ebay.com/itm/MONSTER-HUNT...item19ee2d6384

SEGA Retro article on this game:

http://segaretro.org/Monster_Hunter

Images in this auction show more of the game than anything before but there's a high chance that this is the only copy in the world and it'll be bought by someone who won't dump it. Obviously not expecting anyone to shell out for it per se, but hey, there's a better chance if word spreads on collectors forums like this.