Labuan 1893 PS Double Reply Card 3c SPECIMEN Postal Stationery Double Reply Card Queen Victoria 3c green, overprinted "SPECIMEN" in fine quality. (pt) Labuan 1893 PSC 1c+1c Reply Card Violet "SPECIMEN" Postal Stationery Card + Reply Card overprint Specimen. Very fine quality. (pt) Labuan 1893 PSC 3c+3c Green Reply Card "SPECIMEN" Postal Stationery Card + Reply card overprint Specimen. Very fine quality. (pt) Labuan 1902 $1.00 PROOF in UNISSUED COLOURS SG128, Brown & Black, Imperforate Proof on thin white card with Reference Number above "S.T.712" & overprinted "WATERLOW & SONS LTD. / SPECIMEN", Very fine. (pt)