The 1892-O half dollar is one of the more valuable half dollars. It's worth at least $200 and upwards of almost $800 depending on condition.
The first Half dollar with any mint mark was from the New Orleans Mint in 1838.The mint mark is on the reverse under the eagle
The mint mark on a Barber Half Dollar is located on the reverse side right under the tail of the eagle.
The mint mark is on the reverse of the coin between the tail and the D in the word dollar.
No mint mark indicates that the coin was minted in Philadelphia.
1892 Liberty silver dollar mint mark in on the reverse just above and between the D and O in Dollar at the bottom of the coin. Mine is marked with an S.
The 1920 Half Dollar - aka - Liberty Walking - mint mark of "D" or "S" would be located on the reverse side, just to the left and above the "H" in half dollar.
The mint mark on Franklin half dollars is on the reverse side, just above the Liberty Bell.
No, 234,308,000 were struck at the Philadelphia Mint and will not have mintmarks.
The mint mark on a 1936 Walking Liberty half dollar is located on the reverse [tails] side of the coin in the little "valley" just to the left of the word "HALF" near the edge of the rim.
Not being certain which half dollar you have, I can tell you that there was never an "A" or a "N" mint mark. The letters you should find will be a "D", an "S", an "O", a "P" or a "CC"
An uncirculated Philadelphia half from 1972 retails for about $1.
The letter D is the mint mark so it can't both have a mint mark and not have a mint mark.Please see the related question for more information.