how much is a bicentennial half dollar worth

[StAyla]

Based on the provided information, the value of a 1776-1976 bicentennial half dollar depends heavily on its metallic composition, condition, and mint mark. The vast majority of these coins, which were minted in large quantities for general circulation, are made of a copper-nickel clad composition and are typically only worth their face value of 50 cents if they show signs of wear.

However, certain versions carry a higher value. The U.S. Mint produced special collector-edition coins made of 40% silver, which can be identified by an "S" mint mark for the San Francisco Mint. These silver versions are worth more due to their precious metal content, with their base value tied to the current market price of silver. Uncirculated examples of both the standard clad and the 40% silver coins will also command a premium over their circulated counterparts.

In summary, a standard, circulated bicentennial half dollar is worth 50 cents. An uncirculated version may be worth a few dollars. The 40% silver collector versions are the most valuable, with their worth being determined primarily by the spot price of silver and their numismatic grade or condition. To determine its specific value, one must first identify whether the coin is the common copper-nickel version or the 40% silver issue.