At most a few milligrams, not enough to make it worth trying to recover.
Plus, the coin itself is copper-nickel so it's only worth 50 cents.
It is only gold plated which adds no extra value. Since it is a gold plated coin it is considered altered and is worth face value.
Although it's gold plated, the coin did not have any collectible value to start with. Kennedy half dollars are not rare or even scarce. It's considered a novelty coin that's only value is to someone who wants it.
The Mint does NOT make gold half dollars. The coin has been gold plated. Gold plated Kennedy halves are only face value.
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.
There shouldn't be any other dates stamped on your half dollar. Only the date 1969.
The US has never made a gold half dollar of any date, it's likely been gold plated take it to a coin dealer for an idea of value.
Gold plating adds no value when it comes to coins and indeed is a form of damage. A gold plated coin is worth the same as a damaged example of that coin. For example, a gold plated 1964 half dollar is worth the $7 in melt that a normal damaged 1964 half dollar is worth. A gold plated 1971 half dollar is worth 50 cents just like a damaged 1971 half dollar is worth.
Your coin is plated. The US has never made a standard half dollar in gold. Unfortunately the plating has destroyed any significant collector value the coin may have had.
Gold plated, but not gold. A private company took an ordinary 1968 half dollar and plated it for use in jewelry or as a so-called "collectible". The underlying coin is made of 40% silver so you could sell it for $2.50 or so, but that's about all. No circulating coins have been made of gold since 1933.
7-6-11>>> It's actually a Walking Liberty half dollar. The Mint does NOT make gold half dollars. The coin may have toned or been gold plated, but either way the value is just for the silver, about $12.00.
It's only gold plated. It's worth around $4 and maybe a few cents extra for the gold plating.
50¢. It's not real gold. It's plated. Your coin is an ordinary copper-nickel half-dollar issued by the billions in honor of the country's Bicentennial. Private companies plated them with a thin layer of gold and sold them at inflated prices as "collectibles". However they're considered altered coins and have little or no collector value.