it means money
M = a thousand dollars MM = a million dollars (a thousand thousands)
The BU stands for Brilliant Uncirculated for all coins not just Morgans dollars.
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The letters MS stand for Mint State, meaning "as it came from the mint" and can be used for any coin not just Peace dollars.
All circulating US silver coins were at least 10% copper. Pure silver is far too soft, so it has to be alloyed to stand up to circulation wear.
tom has 39 silver dollars
The last true silver dollars were made in 1935. That year marked the end of 90% silver dollars. The next silver dollars were made in 1971. These were Eisenhower dollars. They are not made of silver but rather of copper and nickel.
All silver dollars made of silver contain 90% silver, but the last of those was minted in 1935. The Eisenhower dollars of the 1970s didn't contain silver.
39
Half dollars minted before 1965 are 90% silver, and those from 1965-70 are 40% silver. Then with silver dollars, the last year for ones with actual silver in them was 1935 (there were no dollar coins from 1936 to 1970).
The M stand for her middle name
Silver Dollars were minted starting in 1794. There were no silver dollars minted in 1791