Nicaragua 1954 United Nations Organisation 4c Air perf printer's sample in unissued colour (green instead of red-orange) with security punch hole and overprinted Waterlow & Sons Limited, Specimen, unmounted mint as SG 1203
Nicaragua 1954 United Nations Organisation 4c Air perf printer's sample in unissued colour (green instead of red-orange) with security punch hole and overprinted Waterlow & Sons Limited, Specimen, unmounted mint as SG 1203