Sweet Mary mother of Jesus! For the first time since I graduated, I glad of my Chemistry degree! Everything from acid baths to re-plating! And on the subject of verigris - two lines... "Rub with a fine cloth which has been treated with copper soap. Copper soap can be obtained from drugstores." ============================== Having now googled 'copper soap', all I'm coming up with is a fungicide... I wonder if that is what they mean?! Think I might just save myself £10.80 ;-) Does it say anything at all about a neutral preserver for coins? I just can get my head around the acidic olive oil thing at the moment, there must be an even less acidic 'grease' we can 'smear' on our coins? I've got my eye on a couple of books, I mean to get mine for £10.80 INCLUDING postage! I wonder , what about copper ease for brake pads ?