$1 in 1980 was worth $2.61 in today's money.
A US half dollar with a date of 1979 is a Kennedy half dollar not a liberty half dollar. The coin has no silver and is only face value.
In 1980 1USD=7.8 INR
It has a metal value of about $10.
Value is for the silver about $2.50
The US didn't strike any half dollars in 1804.
A U.S. half dollar dated 1953 or 1952 is a Franklin half dollar. If it shows any wear, the value is only for the silver, about $10.00. The coins are very common.
A US half dollar with a date of 1983 is a Kennedy half dollar not a liberty half dollar.The coin has no silver and most are only face value.
The value of a US 1964 half dollar in circulated condition is around $10. in uncirculated condition they are worth around $16.
The Franklin half dollar was produced between 1948 and 1963. Please check your coin again. For the value of a 1937 LIBERTY half dollar, see the answer on WikiAnswers for the question "What is the value of a 1937 US half dollar?"
You have a Franklin half dollar - a 1957 proof coin is worth around $25.00.
A US Kennedy half dollar dated 1969 is only 40% silver with a value of about $2.00.
If the coin is a US Kennedy half dollar dated 1974 it has no silver in it and is face value.
The value of a 1966 Canadian silver half dollar is about 8.50 US dollars. In the case of the rare small bead variety, the value is between 1,000 and 2,000 US dollars.
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.
Look at the back of the coin for "HALF DOLLAR" no US dollar coins were struck after 1935.
The 1943 Walking Liberty half dollar is the high mintage of the series with an average value of $5.00 to $8.00 in circulated condition.
Please turn the coin over and check the denomination on the back. It's a half dollar, not a dollar. There's more information at the question "What is the value of a 1946 US half dollar?"
A US liberty 1936 half dollar is worth half a dollar in 1936. It is now worth around $15 to $50 or more in 2013. The variation depends on the coin's condition.