There were no circulating $1 coins with that date, and in any case all circulating dollars made since 1971 have been struck in copper-nickel or brass, not silver.
If you have a large (~ 40 mm) coin that says "1 oz" on its back, you have a bullion coin sold to collectors and investors, and not made for spending. Its value depends on the current spot price of silver which changes every day.
A "dollar" made in 1221 doesn't exist, so there is no value. The dollar is US currency and the US was not established until 1789. Money in 1221 was different than it is today and not made of silver. Each coin was hand casted and made in 1221.
There is no silver in a 1972 US half dollar.
You are probably asking about American Eagle silver dollars. These are worth about the spot price of silver. Currently they are worth about $32.
There is around .77 ounces in a 1921 US silver dollar.
If you mean a real silver dollar, such as a Morgan or peace dollar the thickness is 2.4mm
A real silver dollar has a $25.00 value just for the silver.
If you are referring to the special silver proof half dollar it is worth about $40 -$45. All other half dollars from 1995 are not silver and are worth 50 cents. Unless it is in a special holder it's almost certainly not a silver proof.
what is the current value of an 1878 silver dollar
Sorry no US silver dollar coins dated 1826
No US silver dollars were made after 1935, look at the back of the coin for 'Half Dollar'.
The US never printed 100 dollar silver certificates with this date.
current silver troy ounce value
Value is for the silver about $2.50
20,000
79dollars
Zero
The first US Dollar coin was struck in 1794