Zambia Zambia Philately: 1973 Third Commonwealth Conference of Speakers and Presiding Officers – 9n Parliamentary Mace thedigitalphilatelist 24/09/1973 Details Designer: Gabriel Ellison Printer: Questa Colour Security Printers Ltd (House of Questa) Process: Lithography Paper: Watermark: None Perf: 13.5 (comb) Cylinders: Sheet: Quantity: Related