Oh it's a sneaky one alright. I strongly suggest glancing at the IN as the only reasonable way to spot this one with a loupe and not putting every coin under the scope. The IN is visible on all die stages and other than that maybe the thickness of the L but there are a lot of non DDOs out there with a flattened lower bar of the L so I just look for the doubling on the IN.
And it's not even all that much easier to see on a stage-A example, if you'd like to see the one in my collection:
1995
Lincoln Memorial cent DDO-002 Stage-A




