In order to give an accurate estimate, the coin should be seen. I suggest you take it to a coin dealer and have it appraised.
Please turn the coin over and look at the denomination on the back. It's a HALF dollar.
A 1951 Franklin half has a value of abut $15.00.
Around $12.
$12.50
This half dollar is worth between seven and three-hundred dollars, depending on the condition.
1951 was the last year of issue for this coin (1946-1951) it was struck at all 3 Mints. Assuming it's circulated and has no Mintmark, the retail value is $10.00 to $21.00 depending on how much wear the coin has.
Roosevelt is on the dime and Franklin is on the half dollar. Value is $7.00 to $8.50
$35
50 cents.
The U.S. half dollar has never been made of gold. What you probably have is a gold-plated 1979 half-dollar. It's not really worth much above face value.
All US half dollars from 1964 to date have Kennedy on them, your 1995 half dollar is face value.
It's a Walking Liberty half dollar with a value of about $12.00. The coin is very common.