Arrest your brother for defacing those coins, just kidding kick him in the butt instead. Funny, thanks for sharing.
Those are great examples of how a coin can be damaged by a washer or dryer. I would put those in a 2x2 and hang on to them.
My wife washes my jeans and underwear and I make sure before they go to the washer or dryer, that the pockets are emptied. Loose coins, keys, knives or anything else that is hard can damage your washer or dryer aside that, my wife keeps anything she finds out of my pockets.
Add that to the list: Reasons not to spend your collection. #10 Someone will post it to ETSY thinking they could retire from one sale.