A 1964 Half dollar weighs 12.50 grams
The weight of the U.S. silver half dollar has changed over the course of it's history. In 1794 the silver half dollar weighed 13.48 grams and was 89.24 % silver. Then in 1836 the silver half dollar weight was changed to 13.36 grams and was 90% silver. In 1892 the silver half dollar weight was again changed to 12.50 grams which was the weight used until the final 90% silver half dollar struck for circulation was issued in 1964.
80% or 0.36169 ounce's.
There were no silver dollars issued by the US Mint in 1964.
Look at the coin again and post new question. No U.S. one dollar coins were struck in 1964.
80% or 0.36169 ounce's.
The 1964 is worth about $1200, and '65-70 are worth about $500.
1,000 pounds.
It's a half dollar not a dollar. The coin is very common, most are only valued for the silver, about $12.00
20 years
Try again. The Kennedy half dollar wasn't introduced until 1964.
Please look at the back of the coin. It must be a half dollar as shown by its denomination, because no circulating $1 coins were made in 1964. There's more information at the Related Question.
It depends what year the half dollar was made. 1964 - 12.5 g 1965-1970 - 11.5 g 1971 to now - 11.34 g