This can not be post mint damage . I wish it were bu red or brown. It looks like a tool part we struck in to Obv . «©ell »
I am not sure what could make the Mark. Its has to be harder than copper and flat or a spring ?? «©ell »
This one I am Not sure what happen.trying to learn Canadian errors coins not easy to me. US coins I know were to look for thing but Canadian Coins just 1 web site/ spot so far */* but with a 20x lop you can see letter or maybe numbers in the area affected?