Lot of 12 Unused Postcards Independence Natl Historic Park PA

Lot of 12 total unused postcards from Independence National Historic Park in Philadelphia, PA. Two strips, each with 6 perforated photographic postcards with blurbs on the back about each location. Labelled Plastichrome Colourpicture Scenicard Sets 101 & 102. Each postcard measures about 3.5" x 5.5".