4p on 8ca carmine OFFICIAL issue with 'SERVICE' overprint in black, perf 12, a fine unused block of twelve with variety IMPERF HORIZONTALLY creating six IMPERF BETWEEN VERTICAL PAIRS. (SG O10fb)
4p on 8ca carmine OFFICIAL issue with 'SERVICE' overprint in black, perf 12, a fine unused block of twelve with variety IMPERF HORIZONTALLY creating six IMPERF BETWEEN VERTICAL PAIRS. (SG O10fb)