12c blue 'San Martin' issue, 'Honeycomb' watermark (horizontal) with 'M.H.' overprint (Ministry of Finance). A fine mint block of eighteen. (SG OD14C)
12c blue 'San Martin' issue, 'Honeycomb' watermark (horizontal) with 'M.H.' overprint (Ministry of Finance). A fine mint block of eighteen. (SG OD14C)