...and why would you not expect to see it on an MS-70? That's a nice souvenir of the engraver from NGC. Are there two hits on the dress under and left of "We?" What are the two gray patches in the dress down from center? Hopefully, all those white specks in the image are lint and debris on the plastic.
There are no hits on the dress (lint) and the grey was probably just the lighting. It's hard to get a good whole picture of this, but here are a couple others.
You click on "Upload a File", find your gallery and click either option that says "Thumbnail" or "Full Image". Im not sure for a PC if that's what you got cause I use my phone. Sorry to post unrelated response.