Based on the provided information and general numismatic knowledge, determining the value of a "gold and silver Kennedy half dollar" requires clarification, as the U.S. Mint has never issued a single coin containing both metals. The term typically refers to two distinct types of coins.
One common interpretation is a collectible item, such as the "Gold and Silver Kennedy Half Dollar Collection" offered by private companies like the Danbury Mint. These are typically genuine silver Kennedy half dollars that have been privately altered, often by layering or selectively plating them with gold. Because this alteration is done after the coin leaves the U.S. Mint, these pieces are valued primarily as collectibles. Their resale value is often close to the intrinsic silver value of the original coin, as many numismatists do not pay a premium for post-mint modifications.
Alternatively, the query could refer to the value of separate, official U.S. Mint silver and gold Kennedy coins. The value of a silver Kennedy half dollar depends on its year and silver content. The 1964 Kennedy half dollar is composed of 90% silver, and its base value is tied to the current spot price of silver. Kennedy half dollars from 1965 to 1970 contain 40% silver and have a lower intrinsic value.
The U.S. Mint also produced a special 50th Anniversary Kennedy half dollar in 2014 made from .9999 fine gold. This is a separate, official issue, and its value is primarily determined by the current market price of gold, plus any numismatic premium it commands as a collector's item. Therefore, to ascertain a precise value, you must first identify whether you have a privately plated collectible or official U.S. Mint silver and gold coins.
