They're many facts about US quarters but ine is that all quarters made before 1965 contain 90% silver.
Certainly the single rarest US quarter is an 1866 proof version - only one of these was struck, and it's impossible to put a value on it. The quarter with the highest market value is a 1795 Draped Bust variety with a small eagle on the back. As of 02/2011 a top-quality one is priced around $450,000. Several other quarters fall in the $250,000-$550,000 range, including 1805 and 1873-CC.
The US Mint in Philadelphia struck .............613,792,000 quarters in 1990. The US Mint in Denver struck .....................927,638,181 quarters in 1990. The US Mint in San Francisco struck ...............3,299,559 proof quarters in 1990. Total number of quarters struck in 1990: ..930,938,353
1964 was the last year US quarters were made of Silver.
Do you mean rarest in terms of the number of coins issued, or in terms of values? Quarters have been issued for over 200 years and there are some enormously valuable specimens, including overdates and early proofs. You can scan a list of prices by looking at http://www.numismedia.com/fmv/prices/bstqtr/pricesgd.shtml and http://www.numismedia.com/fmv/prices/setqtr/pricesgd.shtml, for example. Assuming you are referring to Washington quarters, the rarest and most valuable are the 1932-D and 1932-S
Rarest mineral in the US
It depends on what part of the US. But the most rarest silly bandz are: Ocean/Waves, Justin Bieber Pack, Cyclopse, Glow In The Dark Microphone and the last one is Glow In The Dark Unicorn On A Rainbow. These are the most rarest silly bandz in the US.
There is no real data to tell us what the rarest marine fish is. Likely the rarest fish has not yet been discovered, because it is so rare.
Indian head penny
US quarters are not typically magnetic. Quarters are made of a combination of metals, including copper and nickel, which are not magnetic.
No, 2013 US quarters weigh the same as 2010 US quarters. The weight of a US quarter is 5.67 grams regardless of the year it was minted.
They're many facts about US quarters but ine is that all quarters made before 1965 contain 90% silver.
Certainly the single rarest US quarter is an 1866 proof version - only one of these was struck, and it's impossible to put a value on it. The quarter with the highest market value is a 1795 Draped Bust variety with a small eagle on the back. As of 02/2011 a top-quality one is priced around $450,000. Several other quarters fall in the $250,000-$550,000 range, including 1805 and 1873-CC.
All US quarters dated 1964 or before are 90% silver.
80 US quarters are in a pound.
The US Mint in Philadelphia struck .............613,792,000 quarters in 1990. The US Mint in Denver struck .....................927,638,181 quarters in 1990. The US Mint in San Francisco struck ...............3,299,559 proof quarters in 1990. Total number of quarters struck in 1990: ..930,938,353
All pre-1965 US quarters and dimes are 90% silver.