Copper-nickel, not silver. No 40%-silver dollars were made in 1977.
The S mint mark indicates it's a proof coin made in San Francisco. If it's in its original packaging its value could range from $5 for an average one up to $20 for a coin with almost flawless detail.
If the coin is a so-called "cameo" proof with a deep background and pronounced satin finish on the raised portions of the design its value could be much higher. A cameo proof should be examined in person by an expert for an accurate valuation.
The 1977 Kennedy half dollar is very common, still in circulation, contains no silver and is face value, unless it's a "S" mintmark Proof coin or a very high grade Mint State coin.
Value is $17.00-$26.00
8-4-11>>> The 1977 Kennedy half dollar is very common, still in circulation, contains no silver and is face value, unless it's a "S" mintmark Proof coin or a very high grade Mint State coin.
Currently a 1880 S Morgan silver dollar in MS65 uncirculated condition is worth $156.
About $27.
No such coin as a 1977 E silver dollar. A Eisenhower dollar dated 1977 can only have a D or S mintmark and none are silver and the coin is just face value.
The 1977 Kennedy half dollar is very common, still in circulation, contains no silver and is face value, unless it's a "S" mintmark Proof coin or a very high grade Mint State coin.
Value is $17.00-$26.00
One dollar.
8-4-11>>> The 1977 Kennedy half dollar is very common, still in circulation, contains no silver and is face value, unless it's a "S" mintmark Proof coin or a very high grade Mint State coin.
If the coin is a 1996-S Silver Proof Kennedy Half dollar, average retail value is $12.00 to $15.00
Currently a 1880 S Morgan silver dollar in MS65 uncirculated condition is worth $156.
The last circulating silver half dollars were minted in 1969. Your coin is made of cupronickel like all current dimes and quarters, and is worth only face value.
About $27.
42cents
Check the denomination again, the last US silver dollar was made in 1935.
The 1977 Kennedy half dollar is very common, still in circulation, contains no silver and is face value. Unless it's a "S" mintmark Proof coin or a very high grade Mint State coin just spend it.