In an old cigar box I found some coins one was a 1981 gold Kennedy half dollar. I don't know if its real gold seems lite 11g any info or were I could go to find out would be great.
There are no 1981 gold 1/2 dollars minted by the United States Mint. Contemporary copper-nickel coins were often gold plated by a third party to make gift sets, but usually not to a coin collector. The US Treasury would consider these coins mutilated coinage and would value them at 80% of face value.
I've never quite figured out why that happens here; it's hard on a database to keep that much data accessible. This is the only forum I've ever posted at where raising years-old threads is even allowed by the software.