I had one of these in my DDO-001 collection but this is a significant upgrade I just found in a B/U roll. It has taken a lot of rolls to finally find one with a couple of these in it. Of note, the doubling is tough to see, especially on circulated coins, but that die marker is easy to see and it is somewhat better to just search for it and then the doubling rather than the usual way around.
1963
Lincoln Memorial cent doubled die DDO-001



