Op's 1914 D Lincoln is real. And not the worst strike imo. Some people here havent seen enough Lincoln's from this era. While the philly mint struck some wonderful examples, Denver and San Francisco over worked their dies all the way through the 1920's, so it isnt uncommon to find weaker stuck coins from those mints at this time. As for the weakness on the reverse at PLURIBUS, that doesnt bother me at all considering that area there and at 10 o'clock on the O in ONE is usually the first place exhibit die wear. I would have no problem buying this coin raw and calling it atleast AU depending on how it looks in hand.
@Michael K, I started to post only this: . Sorry, but it's obvious that your question is sincere. The coin is loaded with luster. Where else is it clearly visible on the obverse? Mushy letters can be anywhere on any coin especially on one struck w/a worn die. They are also found on counterfeits. In that case, all the letters are normally mushy. You are correct. EXTREMELY DECEPTIVE counterfeits struck from dies made using a genuine coin WILL match the die pair of the genuine specimen.
Not that I can put my hands on at the moment. eBay was swimming with classic commemorative halves displaying this issue a year or two ago, but a very quick check isn't turning them up just now.