
Based on the provided information, a 1963 Franklin half dollar was struck in 90% fine silver. This composition means the coin's alloy is made of 90% silver and 10% copper, which was standard for U.S. silver coinage at the time. The year 1963 was the final year this half dollar was minted before being replaced by the Kennedy half dollar series.
While the context does not specify the exact weight, standard specifications for a 90% silver half dollar from this period indicate a total weight of 12.5 grams. This equates to an actual silver weight of approximately 0.36169 troy ounces per coin.


