In the year 1921 the United States Mint didnt have the best quality control it seems. 1921 Silver Dollars generally have nice reeded edges as they are newer than those minted in the late 1800s. Due to the Pittman Act, passed in 1918, many of the 1921 Morgan's are actually older Morgans and peace dollars melted down and re-coined. Not since 1904 had these coins been minted.
The Minting of Morgans started up again in 1921.
