In the center between the buildings are two raised notches side by side. Sorry for the inexperience in editing. Had a heart attack 6 months ago and trying to relearn a lot of things.
The bottom one has the raised notches.The top pic is of a regular Sac. More than half of the coins I received from the mint has this.



Edited by comdewah
12/18/2015 12:36 pm