It took George Perrott and his wife more than seven years to complete this book. It is compiled in date order and consists of marks from the factories of Europe, USA, Japan and China. It covers approximately 10,000 marks and references. It commences with the Ming Dynasty of 1368 and takes the reader through the 15th century 'Maiolica' period of the Italian Renaissance, the German and French 'Faience' of the 16th century, the early 17th century Dutch 'Delft' wares and continues on to the great factories of Europe including Meissen, Sevres, and the English factories of Wedgwood, Minton, Spode Doulton etc. The major part of the book concentrates on older marks but a significan effort has been made to include marks from factories and potters that are currently in business and still producing their wares today. More than 500 companies throughout Europe, USA, and the Far East contributed to this project. Collectors Clubs and Museums were also a great source of information. This publication is in fact one of the most original marks books to come onto the market in recent times. It must be the first of its kind that catlogs the marks, factories and potters in date order giving added perception of their time in history. If you are a collector of porcelain and pottery or you deal in it as a profession this book is a must for your bookshelf.