Nice finds!! Too bad they are clad, but that buffalo is real nice too!
When I was a young kid, I remember dumping a bunch of coins in an easter egg, and burying it outback at that house...
I should go ask permission from the current owners to try and find it... I doubt anything real good, but my grandpa did used to give us silver dollars/halves, and now they are all gone, whether i spent them, or lost them I dont really know