British Empire Study Group Sept 12 2024 meeting Hosts Mike Blum “A Forensic Examination of the Cape Triangles” – Cyanide, Lead and other materials on Stamps”
For Modern Stamp Collectors
British Empire Study Group Sept 12 2024 meeting Hosts Mike Blum “A Forensic Examination of the Cape Triangles” – Cyanide, Lead and other materials on Stamps”