I don't see any doubling of lines. Thinking perhaps the paper was too damp when it was printed. Attached image compares yours with a mint example from the Siegel website. Blurry photo quality aside, you can see that the oval segments of the frame on the top, bottom, an sides are clean on both. The little backwards comma within the LRH ornament is very clear in yours as it is in the Siegel image. None of the lettering seems doubled.
