Bison grass extension Anybody else notice the extension of the grass on the reverse side of the 2005 jeff bison nickels? It looks like the grass under the front of the bison's feet comes to a point that sort of looks like a dolphin's nose on most coins except for a couple of nickels that I have found. On these, the point is much farther out and is more like a dolphin eating something. I'll post a shot of this when I can. All have been from the Philly mint so far.