Vintage Lady Pepperell Double flat sheet -New in package

Vintage Lady Pepperell double flat sheet which is new in the package. It is 50% cotton and 50% polyester. The plastic packaging is worn, and there are a few holes in the plastic. It looks like some dirt/dust has gotten inside, as there is a large stain/smudge in the upper right corner on the front, top edge, and upper left on backside. When I lift the plastic up from the sheet, most of it stays on the fabric.