Uruguay 1941 Juan Blanes 5c Printer's sample in grey (issued stamp was bistre-brown) overprinted SPECIMEN Waterlow & Sons with security punch hole and mounted on small piece, as SG 855
Uruguay 1941 Juan Blanes 5c Printer's sample in grey (issued stamp was bistre-brown) overprinted SPECIMEN Waterlow & Sons with security punch hole and mounted on small piece, as SG 855