1970 D Tapered Planchet ?

@san, I agree this looks like normal circulation wear. What is the weight?

Sure looks like a normal strike.

Coin counters may alter these coins. But it is not uncommon to see that bevel on new coins. If you have a clear plastic tube, when you view them in there, then you see it better. Just a normal strike. There may have been an issue with grease on the dies. How do I tell? Note that some of the devices are wider than normal on some of the and not all of them. The widening happens either by coin contact or grease filling in part of the devices design. The devices are narrow at the top and wider at the bottom. Thus they release from the die after the strike.

Angled grease often occurs because of a wiping the die with a cloth forcing the grease in the same direction. When you have a part fill, the devices will be shorted and wider as the deepest part of the devices are the narrowest area of the design. No premium for this, but it explains what causes this die/strike event. Circulation flattening is damage to the coin. Hope this helps. If not ask another question or start a new thread with the question so it can be considered for more study. (A pointed question will be easier to find when members search for the answer. Thus the advantage of the CoopHome information to locate answers to questions new ones have not even thought of yet)

That area is weak on a lot of Lincolns, because the shoulder on the obverse takes so much material to form, it has to come from somewhere. Weight would show that it is normal.