Please check again and post a new question. The West Point mint opened in 1988. Walking Liberty halves were struck from 1916 to 1947. I think you're looking at the monogram of the designer, A. A. Weinman.
If the coin is dated 1916, the mint mark is under the date. 1918 and later, on the back at the 8:00 position near the edge. 1917 could be in either place. The mint mark would be a D or S; if no mint mark, then the coin is from Philadelphia.
Your new question should of course also include the coin's date, which you didn't provide originally.
Thew US Mint in 1996 produced the American Eagle Silver Bullion Dollar. It was minted in three locations: San Francisco ("S"); West Point ("W"); and, Phillie ("P"). The 1996 S and W were minted in a MS-65 and are worth $70.00; the "S" coin was minted in a proof state (PF-65) and is worth: $75.00.
By the way, this coin should be carrying a "W" mint mark (short for West Point).
The mint mark is located on the eagle side of the coin and is between the word " fine " and the eagle.
A 2002 American eagle Bullion Silver Dollar was minted only at West Point, thereby the coin only carries the mint mark of "W." In uncirculated condition, its value depends on the current price of 1 oz of silver; if the coin is in a proof state, the value is roughly double that. Currently silver is worth $32 per ounce. So they are worth about 32 dollars.
The West Point Mint didn't exist in 1937. "W" is the initial of the coin's designer, A. A. Weinman. Please see the related question for more information.
The West Point Mint did not open until 1988. You're looking at the monogram of the designer, A. A. Weinman. In 1941, there were 3 coins minted - one was plain and the other two carried a mint mark of "D" and "S." The mint mark location is on the back around the 8:00 position. Please see the Related Question for values.
It means the coin was struck at the West Point mint (commemorative coins only) Keep in mind though that there are two coins that may appear to the inexperienced coin collector to be struck at the West Port Mint. Both the Mercury Dime (1916-1945) and the Walking Liberty Half Dollar (1916-1947) have Adolph Alexander Weinman's initials on them which may look like a "W" mintmark. However, none of these coins were ever minted at the West Point Mint and are not mintmarks.
Bullion Bullion Silver Eagle coins do not have mintmarks. Since 2001, they have been minted only at West Point. Proof From 2001 to 2008, they were minted at West Point and these coins bear the "W" mintmark. Mintmarks All mintmarks are on the reverse, to the left of the eagles tail.
The only gold coin struck in 1921 was a $20.00 double eagle and is very rare. Silver coins struck in 1921 are: 3 different commemorative half dollars, the Walking Liberty half dollar, Standing Liberty Quarter and the Mercury Head Dime.
Please see the Related Question for estimated values. "W" is the designer's monogram rather than a mint mark. At that time the mint mark position on half dollars was located on the reverse side, and in any case the West Point Mint has never struck circulation coins.
Bullion Silver Eagle coins do not have mintmarks. From 1986 to 1998, they were minted at San Francisco. From 1999 to 2000, they were minted at Philadelphia and West Point. Since 2001, they have been minted only at West Point
The term "Silver Dollar" is a widely used [and Misused] term. Is this in fact a coin which says One US Dollar? There are many 'coins' minted today by private firms with as much as 100% silver and since they are not afiliated with the US Treasury, they would not have a mint mark such as you would find on uUS coins in normal [or former] circulation. It is also possible that you have a 'Silver Eagle' which is an authorized US coin. If so, it will have Lady Liberty in a flowing robe, the sun at her feet, and 'In GOD We Trust' to the side. On the back, you should see a bald eagle with 13 stars above his head representing the 13 original colonies, and "One once fine silver One Dollar" printed around the edge. This coin was minted at the US mint in West Point, New York. It is a legal-tender coin, but don't let it go for a dollar! Last time I checked, it was worth over $16.