20c claret 'Centenary of Independence' issue, imperf 'Waterlow' COLOUR TRIAL in unissued colour mounted on card with 'Waterlow & Sons Ltd SPECIMEN' overprint in black. (SG 647)
20c claret 'Centenary of Independence' issue, imperf 'Waterlow' COLOUR TRIAL in unissued colour mounted on card with 'Waterlow & Sons Ltd SPECIMEN' overprint in black. (SG 647)