Sorry, no "F" mintmarks, look at the coin again and post new questin
It is worth about $12 if in circulated condition and about $30 if uncirculated.
An uncirculated Philadelphia half from 1972 retails for about $1.
There were no dollar coins minted between 1936 and 1970 inclusive. Please check your coin again, you probably have a HALF dollar.
There are no mintmarks on 1965 Kennedy half dollars.
They are still found in circulation, have no silver and are only face value
If the coin has any wear the value is for the silver, about $8.50
The 1946 walking liberty half is a common date, but because it is 90% silver, it is worth around $10.50 in common circulated condition.
Depends entirely on year, mint mark and condition.
It's just a common date half dollar that's still found on circulation, spend it.
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"
Need to know if mint mark is on the front or back of coin
It depends on what date and mintmark it is, post new question