I just received a 2017 1/10 oz. gold Krugerrand. At first glance it looked like it had a ding in the metal. I took a look at it under the loop. Instead of it being a ding, it has gold buildup like a solder drip on the coin face (pencil tip size). Was this caused by a piece of gold sitting on the blank when it was struck? Should I return it? I know it is just bullion, but I like nice things. I'll try and get a pic tonight.