The green spots found on some copper coins are called verdigris this is a copper salt like rust. It is usually copper acetate, but can be a copper hydroxide. Neither of these would come off with any kind of...
Confused or unsure about purchasing coins of this era on ebay ? I hope my guide will provide some answers to your questions. This guide is intended to be of help when considering which Saxon and/or Norman...
On visiting coin fairs and dealers' shops in the UK these days you will usually find at least a smattering of coins for sale which are held in officially authenticated plastic holders. The same is true of...
Cleaning Coins - It's Often Better Not to Clean Coins, But How to Clean Them If You Must,How to Clean Coins Don't!The best advice we can give for most people about cleaning coins is...don't!We see far more...
Generally, you should never clean coins. Any self respecting collector would tell you that. Many coins loose their value when cleaned and a buyer with a keen eye can tell when a coin has been badly...
verdigris takes several forms on these coins, the type that sits on the surface of the coin ie hoard coins and the other main sort which form spots on an otherwise sound bronze coin, the first type is easily...
Simply this:- please do not clean coins using any abrasives, acids or alkaline cleaning products whatsoever ! If you feel you must muck about with a coin a little mild detergent in hot water and your fingers...