Spain - Catalogue of local stamps issued during the Spanish Civil War. - Fesofi-Sofima. Catálogo de los sellos locales emitidos durante la guerra civil española 1936-1939
Spain - "Catalog of Local Stamps of the Spanish Civil War 1936-1939" - Volumes I and II (Complete) - Catálogo de los Sellos Locales de la Guerra Civil Española 1936-1939" - Tomos I y II (Completo
Italian Republic 1949 - Republic, Centenary of the Roman Republic. L. 100, new with full original gum. - Sassone N. 600
Belgium 1849 - Leopold I - Proof medallion without denomination figures - Rejected design by DELPIERRE in Black