Your coins are damaged. Like @ldhair stated, there is no way to know for certain how each coin was damaged. Only the person who damaged it knows for sure. What we DO know is the minting process, which you apparently need to brush up on, and we know that what you posted are not true mint errors. Sorry you don't want to hear the truth but that's what it is. Take it or leave it.
Someone may have been trying to spoon the coin into a ring. That is why the rim is thicker and diameter smaller. I can also tell someone was holding it with a tool in the middle to spoon the coin. You can duckduckgo(google) coin spooning to read more. All of the coins are damaged.
Dont matter I know this nickel is smaller in diameter and thicker than what it supposed to be also broken letters. Like the T in states. The coin looks like a bowl on both sides. Regardless I wont be lying if I put it on Ebay. Like you said you have know idea how it was damaged. I see this in person. I guess you would tell me this one is damage to. Here I will help you out IT IS DAMAGED that's why we collect them
Agree that none of the nickels could have left the mint looking like that. First has some type of melted metal adhered to it. The second looks like the rim was damaged similar to spooning or a dryer coin. The third looks like it suffered some type of abrasion like grit blasting. Regardless, there is no part of the minting or die making process that would produce coins like that. The quarter is an off center strike error, not Post Mint Damage (PMD)
The quarter is an actual mint error, unlike the nickels. I don’t think OP cares for what I have to say though since he didn’t like my other answers.
