1952 is not a hard date to come by for Franklin half dollars, actually all Franklin half's (1948-1963) regardless of mintmark are common and most circulated coins are valued for the silver only, about $13.00
$12.00
About $10.50.
No circulation Franklin half dollar is rare, and with the rise of silver prices it is worth about $15 in scrap silver unless it is a proof or in a mint set.
About $6 for its metal content.
It is a common date worth about $10 in silver scrap since it is 90% silver.
The last Franklin half dollar was dated 1963.
The 1958 Franklin half is a common coin, currently worth about $9 for the silver.
So many were struck the value is for the silver, about $6.00
The 1963 Franklin half dollar is so common if it has any wear at all the value is for the silver only, about $10.00.
Check that coin again, because what you describe doesn't exist. Ben Franklin was on the HALF dollar from 1948 to 1963.
About $6 for its metal content.
No, it is not rare. It is, however worth the silver content used to make the coin as it is 90% silver, at current silver prices it is worth just shy of $10 in silver value.