The 5,my first thought was a die chip but it just looks to perfectly formed,nothing screams damage so what is it?the blood sucking 5.
Put it in a 2×2 with what I said above its a good example,Lincoln's purse would be running for the hills!!!!.
The area i circled is what I thought to be a huge anomaly but its just the 5 and a little end of a ground stake.