Unless it's a Peace design dollar, there's no real gain if you auction it. You can simply sell it directly to a collector or dealer.
A 1921 Peace dollar would have an eagle with folded wings on the back and is quite scarce. The Morgan design also issued that year has an eagle with opened wings and is by far the most common date for Morgans.
Please see the Related Question for more information.
There is around .77 ounces in a 1921 US silver dollar.
A 1921 Morgan dollar is worth about $25.00
There is .77344 of a Troy ounce (a little than 24 grams) of pure silver in a 1921 U.S. silver dollar.
that year they had two different types of silver dollars the Morgan Dollar and the Peace dollar
A 1921 Half Dollar is 90% silver. It has a melt value of somewhere around $12. The related link below has more information.
1922 silver dollar with closed eagle wings
$35
Yes. That's a Morgan silver dollar.
lbj
$90,848,64
About 23.00$ depending of the price of silver....
No. The US has never and will never make pure silver dollars.