I was going through some of my years that have low production numbers. Specifically 41S. Most of mine are just damaged pretty badly. This one below was at least to me interesting. Ive never run across MD exactly like this. It seems to be only around the date and very strong around the mint mark. My instinct is telling me its just some sort of MD. I see nothing in Wexlers or Variety that looks quite like this so Ive eliminated alot of possibilities. Anyone know how this happens?? It almost appears like there are 3 "sets" around the mint mark. Only the date and MM look like this the other pictures are just to show condition....outside the date and MM its just PMD.