Not always, no. If it was minted in Philadelphia, then there is no mint mark.
No such thing as a "strike mark" but U.S. coins do have Mintmarks. For Morgan dollars, they are on the reverse just above the DO in DOLLAR.
The mint mark on any Morgan dollar is on the reverse above the letters DO in dollar.
If it has one, it's on the reverse above the DO in DOLLAR.
The mint mark (if it has one) on all Morgan silver dollars is on the reverse of the coin just above the letters "DO" in dollar.
The mint mark on any Morgan dollar is located on the reverse (tails) side, near the bottom, just above the letters "do" in the word "dollar."
If it has one, it's on the reverse above DO in the word dollar.
In 1921, the US Treasury minted both a Morgan and Peace Silver Dollar. Which type do you possess? Please provide to me the mint mark, mint state, and the type of coin, and I will subsequently relay to you its worth. Also, NO U.S. circulating coin is pure silver. Silver is too soft by itself, and is always alloyed with copper. Silver dollars minted in 1935 and before are 10% copper. it is a Morgan dollar, no mint mark
If it doesn't have a mint mark, that means it was made in Philadelphia.
The mint mark on a Morgan dollar (if any) will be found on the reverse of the coin under the wreath between the "D" and "O" in "DOLLAR".
The mint mark (if it has one) on all Morgan (1878-1904 & 1921) silver dollars is on the reverse of the coin, just above the letters "DO" in dollar.
The mint mark on all Morgan silver dollars are located on the reverse of the coin near the bottom. Look above the "D" and "O" in the word DOLLAR
The mint mark on all Morgan silver dollars is located on the reverse side of the coin just above the letters "DO" in the word "DOLLAR".