In unworn condition, 6.25 gm.
Current copper-nickel quarters weigh 5.67 gm.
Pre-1982 copper pennies weigh 3.11 grams. Pennies made since then are mostly zinc and weigh 2.5 grams.
One silver (pre-1965) half dollar weighs 12.5 grams, so 20 weigh 250 grams.
It depends if you are talking about pre-1982 pennies or post-1982 pennies.
A 90% silver (Pre-1965) Half Dollar weighs 12.50 grams, 1965 to date 11.50 grams
Modern zinc (1982-present) pennies weigh 2.5 grams each, and copper pennies (pre-1982) weigh 3.11 grams each. 50 new ones weigh 125 grams and 50 old ones weigh 155.5 grams. A mix of the two weighs somewhere in the middle.50 US pennies would weigh about .338 pounds.
U.S. quarters dated 1964 or earlier contain .18084oz of silver.
Pre-1964 quarters in the United States were made of 90% silver and 10% copper.
The pre-1965 quarter costs 500,000 dollars in the USA
U.S. quarters, starting from 1932, are called "Washington quarters." Washington quarters dated from 1932 to 1964 are made with 90% silver and 10% copper, and weigh 6.25 grams. The value of the metals depends on the market price of silver and copper. As of October 5, 2007, the value of the silver in a pre-1964 Washington quarter is $2.41 (market price of silver $13.39 per ounce) and the value of the copper in a pre-1964 Washington quarter is about a half of a cent, giving the total value of a pre-1964 Washington quarter about $2.42. If the coin is rare, and/or is in mint like condition, it could be worth significantly more. None of the 1944 Washington quarters (Philadelphia, San Francisco, and Denver mints) are rare, but if the coin is in mint state, it would be worth about $35.
90%, or 2.25 grams.
150
Pre-Creedence was created in 1964.
"pre-64" means "before 1964". Figure it out for yourself.
Same as post-1964 nickels: NONE. The only exception is for nickels minted 1942-45.
pre 1964
is weight per foot the same as pounds pre square foot
25 cents, unless they are date 1964 or before, then they are 90% silver.