Literature. Walton, F., 'The De La Rue Collection', six hardbound volumes with dust jackets in one blue cloth covered wood slipcase, in total 4100 pp., The Royal Philatelic Society London, 2014. With colour illustrations of every items from the De La Rue corporate collection. Limited edition of only 126 copies. Rarely offered and sought-after, previously sold used for up to GBP 8,500+% (Cavendish, 2023). Almost as new. Approx. 18 kg.