Her Face Value - 1921 was released on: USA: 13 October 1921
Her Social Value - 1921 was released on: USA: 24 October 1921 Portugal: 29 May 1925
You are a lucky man. I'm not sure how much, but my best guess is around 1,000 depending on quality and condition. hold on to it.
1921 is by far the most common date for Morgan dollars -- current value is about $17.00
There are no U.S. notes with the series date of 1921
A
Modified coins have no collector value.
1921 Morgan dollars unless they have an exceptional strike and are virtually perfect generally sell for about their silver melt value, about $25 at current melt value.
If it's a US 1921 Mercury head dime, minimum value is $40.00, take it to a coin dealer for a better idea of value. It needs to be seen for an accurate assessment.
A average Mint State 1921 Morgan is $30.00-$40.00
About $27 each.
This coin is also called a buffalo nickel. Both names are about equally common; please see the "What is the value of a 1921 US nickel?" for more information.