The Peace dollar was made to remember the peace of world war 1. They were minted from the San Fransico, Denver, and the Philadelphia mint. They were from 1921-1928 then 1934-1935. The Peace dollar was 90% silver and 10%, copper. The rarest types are the 1928 P, for only 360,649 were minted. At coin study. com, it shows that the average price is around 45-$50. There were approximately 190,577,279 minted.