This book investigates the identification and significance of hallmarking on English silver. John Bly, an established expert in the field, draws upon extensive historical records and his own considerable experience to provide a comprehensive guide to understanding these marks. The book presents a systematic approach to deciphering the various assay office marks, date letters, maker's marks, and duty marks that authenticate and date English silver objects, offering a framework for collectors and historians alike.

This work is recognized as a foundational text for anyone interested in English silver hallmarks. Its detailed approach and Bly's expertise make it an invaluable resource for collectors and dealers. The book is praised for its clarity in explaining complex marking systems, aiding in the accurate identification and dating of silver pieces. It serves as a reliable reference for understanding the historical and artistic significance embedded within these marks.