US MINT SHEET SET NATIONAL PARKS! Perf And Imperf (50) Pristine! Every sheet is a TOP sheet, again not very common for a set like this one!This will make a big statement in your collection! The item "US MINT SHEET SET NATIONAL PARKS! Perf And Imperf (50) Pristine" is in sale since Saturday, July 25, 2020. This item is in the category "Stamps\United States\Collections, Lots". The seller is "mawmaw0520" and is located in Big Pine Key, Florida. This item can be shipped to United States.