Fun! That coin in the top left corner looks similar to one I found recently that showed signs of where the planchette had been dirtied or stained by rollers. I think I can see stripes, running diagonally on your coin which are evenly spaced and perfectly straight. You might want to examine that coin more carefully and photograph it again. I would like to see that coin better - and both sides of it. Nice score.
That 1994 in the lower right corner looks spooned. That is a lot of wheat for one days worth of roll searching though. Pretty cool.
I thought the one in the top left was a woody, so here are more pics of that. The one in the bottom right is smaller than the rest. I was 99.999% sure it was man made damage but thought I'd throw it in there. I think the 1920 may be worth a little more than face value also.
