Weighing 1.40 face value pre-1965 minted Franklin half dollars 2 and Mercury dimes 2 on precision digital scales to confirm coins weight. A Franklin half dollar contents 90 silver and 10 copper. That is about .36169 ounce of silver per coin. The Mercury dime contents .07234 ounce of silver. The two Franklin halves and four Mercury dimes should make 1.01274 ounce of silver.
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