Hello All. I've just rediscovered my old childhood hobby of coin collecting (Shillings mainly) after finding my old coin collection in a coin folder, in a box, in the shed. On looking through my coin folder, I discovered a page where one of the coins - A Scottish 1945 shilling, is very green.The coins surrounding it have touches of green/verdigris My question is...As the coin in question is of little value, shall I just bin it? Fortunately, the coins are in date order, so the others on the page are also of little value. I seem to recall that the shilling had verdigris when I first got it around 30 years ago, but although the coins aren't touching it's either spread or the conditions have affected the others. My most worrying question...I have older shillings in the same folder, but these seem ok to the naked eye. Should I just leave these alone or try and find if they have any traces of verdigris? Or would they be ok because of the silver content? Excuse my ignorance, as I'm a adult beginner! Thanks in advance (I think I've attached the picture)