We ruled out Russian pretty quickly. The profile is very similar, but the Russian bomb fins are bulkier and are almost always welded directly to the bomb body. We finally found a match with the Spanish BNI series of bombs, which also ties into the origins of much of the material from Iraq. Many of the BNI series were observed there during the Gulf War, though I never saw anything of this size. We believe that it is the BNI 1500, but are still struggling with locating a reference.
http://www.bocn.co.uk/vbforum/threads/104513-Unidentified-Bomb-Fins?highlight=spanish
http://www.bocn.co.uk/vbforum/threads/104513-Unidentified-Bomb-Fins?highlight=spanish