MALAYSIA 1975 SOCIAL SERVICES REVENUE IMPERF PROOF BLOCK
Social Services revenue stamps lower right corner imperforate proof block x 12 in prussian blue without value on ungummed and unwatermarked paper. Fifth stamp on top row circled in red ink highlighting a flaw. Marginal inscription 'Corrected', signed by S W Edwards and dated '15.5.75'. Probably unique in this format. Minor creasing otherwise fine.