Several of the coins in the non-quarter 2017 Enhanced UC set I received had black plastic flecks on them. I've learned here that sets like these from the mint aren't sealed so I decided to "crack" my first set from the mint to see if the junk could be removed. It took a little work with a thin blade to carefully open the mint packaging but I was able to remove the junk with a small puff of air.

Once the junk was out of the set I couldn't get over how beautiful the coins were outside the mint packaging. This was the first mint produced set that I've ever opened and I can now see why others do this.
*** Moved by Staff to a more appropriate forum. ***