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...
Cleaning Ancient Coins INTRODUCTION The first step in cleaning ancient coins is to acquire some. Ancient coins are those older than medieval times and some of the most plentiful are from the Byzantine Empire....
Preface I'll start this guide off by saying that Ebay probably ISN'T the best place to buy an outboard for your boat. There's far too much that can be wrong with one that a lot of people are completely...