The date appears to be 1937 so that would make it 90% silver nice find.Not an error just damaged still silver is silver around $4.00 worth.
I'll bet the coin is significantly underweight at this point. Severe fire and/or chemical damage. Welcome to CoinTalk!
Welcome to Coin Talk. Your coin is in very poor condition. I think it has lost any numismatic value. It still has value for its silver content. https://www.coinflation.com/coins/1932-1964-Silver-Washington-Quarter-Value.html
Not in this state. This coin is mangled. The curved hit on the eagle's wing is just that, a hit -- damage. The lumps you see aren't cuds. They're likely places where the metal has bubbled or blistered due to extreme heat. As for doubling on the motto, if there ever was any, it's been obliterated here by the coin's mistreatment.
That quarter was double minted. Once at the mint and again in a parking lot. Trying to determine an error on a coin that damaged is, in my opinion, a waste of time, but it's your time. Good luck.
IN GOD WE TRUST is almost obliterated, I can't really see anything about it. Not sure what you mean with the other two terms, cud coverage or wing punch through.
