Found these two early silver milled coins today george ii sixpence and george iii shilling they need a clean so will post better pictures when cleaned.
What great coins @Pete.pete , personally I would not do that if you are not keeping them because there is a cachet in someone else "improving" them. They look pretty solid to me unless you mean soak them in water. I love the dark tones of these coins and so many 1787 shillings are cleaned to hell and back.