The Proof version of the 2014-P Civil Rights of 1964 commemorative
silver dollar is like no other that the U.S. Mint has ever produced.
Details on the coin’s reverse exhibit a combination of multiple
finishes executed through the use of different Proof polishing and
laser texturing techniques.
At least five prototypes with different finishes on the same details
were produced during testing at the Philadelphia Mint before a
specific combination was selected for final production.
Read more in the April Monthly Edition of Coin World.