Sure is a nice way to start the week. Or end the week. Or any day during the week.
Acetone won’t help with that type of toning but a dip might. Be careful with the dip as over dipping can ruin a coin.
Looks like worn dies to me.
Looks wide to me.
Yes, the third that I know of.
Looks like a normal D mint mark to me.
Very attractive three cent coin.
Separate names with a comma.