The normal weight for a Clad Quarter is 5.67 grams Many coins have a slight weight varience of + or - a few grams. Your Quarter is well within tolerance. It is normal. Not a Mint Error.
I still think I have a 1909 proof from Mama that I can’t find either. I did show it before. So please don’t think I’m fooling anyone. It’s raw too.
Your North Dakota quarter is called a CUD. If you search sold ebay listings you might be able to find what they’re going for. About four years ago they were worth about $8. Your other quarters are all damaged or dirty, not errors.
What about this coin makes you think it is an error? This one is environmental damage. As for the NH quarter I am thinking a vise job. Cool cud though. http://cuds-on-coins.com/washington-quarter-cuds-state-terr-2/ CU-25c-2006P-01R(ND) Stage C
Don't assume that everything that looks different or strange is a Mint Error. There are many post mint damaged coins in circulation. Also.. you should create your own separate unique thread. This thread is for true Mint Errors. Welcome to CoinTalk.