This catalogue by Willcocks Jay is a must-have for any stamp collector interested in Great Britain London postmarks. It provides detailed information on postmarks used in the area, making it a valuable resource for philatelists. The catalogue features Stanley Gibbons as the brand and belongs to the publications category under stamps.

Whether you are a professional collector or a novice, this catalogue will prove to be an essential addition to your collection. It contains comprehensive information on various postmarks that were used in London over the years. Get your hands on this catalogue today and discover the rich history of British postage.