There have been several private mint issues over the years. All are overpriced, or are plated base metal, depending on origin.
The US Mint almost produced Morgan Dollars in the ‘60’s. I do not recall the year, but it may have been 1964. Hubs and dies were produced with both Morgan and Peace Dollar designs. I honestly do not recall which coin publication I read it in, but that may be where the various private mints got their ideas from.
Time for more coffee.