Need Help identifying a hubcap

I found a 15.5" diameter hubcap on the side of the road i am trying to identify, could someone please help me, i have spent days looking at hubcaps with no luck.
Front Picture
http://i87.photobucket.com/albums/k143/seasonalskier2006/CIMG1066.jpg
Back Picture
http://i87.photobucket.com/albums/k143/seasonalskier2006/CIMG1067.jpg

It's a generic cap from the auto parts store.

hey im pretty sure I have seen those on a nissan in my neighborhood. I think its just a generic or standard hubcap for that wheel size