
Based on the provided information, a 1943 Liberty Walking half dollar is composed of 90% silver.
To provide a more comprehensive answer, these coins were minted with a standard composition for the era, which consisted of 90% silver and 10% copper. A standard Walking Liberty half dollar has a total weight of 12.5 grams. Therefore, the actual amount of pure silver contained in a 1943 half dollar is approximately 11.25 grams, which is equivalent to about 0.3617 troy ounces. This silver content is what gives the coin a significant portion of its base value, separate from any numismatic or collectible value it may have.


