Grading for circulated coins is done by how much wear the coin shows. Many on-line and printed guides are available.
Depending on the condition and type, somewhere between 1 and 100 thousand dollars. Get a book on coins to find out what grade yours is in and what type. A 1795 US Silver Dollar is worth a lot more then just a dollar, depending on condition anywhere from 100 dollars to 125 thousand dollars.
US Trade dollars have more silver in them than Morgan dollars do. But in general the Morgans have higher values.
All US half dollars dated 1964 and prior are 90% silver (worth about $11 in scrap silver) All US half dollars dated 1965-1970 are 40% silver (worth about $5 in scrap silver) All US half dollars dated 1971-present that are circulating contain no silver and are only worth 50 cents. (The US does strike commemorative half dollars and proof silver half dollars for collectors but these are almost always found in mint packaging, not as a loose half dollar).
AU means almost uncirculated which is a grade for the coin, depending on the grade on the coin and the year of it, the value of the coin can be from $25 for the most common and lowest grade dollars all the way to $575,000 for the second highest grade, most rare silver dollar(1893S)(no proof 70 silver dollar has ever been found)
There were no silver dollars made in the US in 1946.
No, the US didn't make any silver dollars in 1932.
The US didn't make any silver dollars in the 1960s.
The silver melt value of 820 US half dollars is $10,113.74. The silver melt value of 820 1965-70 US half dollars is only $4,135.40.
U.S. silver dollars dated 1935 or earlier contain 90% silver.
US dimes, quarters and half dollars dated 1964 and before contain 90% silver. Half Dollars from 1965 to 1970 contain 40% silver. The 1942 - 1945 nickels have 35% silver. Silver dollars dated 1935 and before have 90% silver.
no
The U.S. didn't mint any silver dollars in the 1940s.