Susan B Anthony 1979-D Prototype?

Recently I've been quite intrigued about the Eisenhower prototypes, and then today as I was sorting my Susan B's, similar comparisons became evident. First thing that got me to look further was the side reed views of 1979D and 1979S. The proof S coin actually demonstrated the copper color on edge, whereas the D coin was silver tone on edge. So off to the scale. The proof S came in at 8.2g, whereas the D was exactly 8.0! Excited I looked more closely with macro photos. The D showed abrasive finishing throughout both sides of the coin, similar to the Ike descriptions I've read, and many regions of the coin seemed "unfinished", as if a piece of artwork in progress (face around mouth, rustic moon, crude lettering, coin surface scratches front of face and bead behind head, and even a couple of punch marks indented lateral to tip of eagles tail, referred to in Ike as stamp to test metal hardness). So many other unexplained markings I see would be curious to hear your interpretations. I tried as many photo variations as possible. Please let me know your thoughts.