1914 1d carmine mint block of eight from the lower right corner of the pane showing watermark variety "POSTAGE" inverted on the bottom row and a second "POSTAGE" upright in the sheet margin at foot, only three stamps mounted in the top row, a very rare watermark variety, cert RPS (2013) (S.G. Spec. R2c). (Image)

1936-37 1d red imperf. imprimatur block of four from the top of the sheet, mint n.h., the reverse stamped "NPM IMPRIMATUR", very rare with this block containing four of the six examples released from the NPM archive sale. (Image)

1936-37 5d yellow-brown imperf. imprimatur in mint n.h. block of four from the top of the sheet, the reverse stamped "NPM IMPRIMATUR", very rare with this block containing four of the six examples released from the NPM archive sale. (Image)

1936-37 2s6d purple on yellow imperf. imprimatur in mint n.h. block of four from the top of the sheet, the reverse stamped "NPM IMPRIMATUR", very rare with this block containing four of the six examples released from the NPM archive sale. (Image)

1951-54 1s ochre mint n.h. with variety wmk sideways inverted, top marginal example showing the variety, this being the original discovery example and accompanied by a copy of the original letter from Stanley Gibbons confirming its inclusion in the 1994 Concise catalogue as SG D39wi. (Image)

1959-63 1/2d orange on whiter paper imperf. imprimatur pair from the top of the sheet, mint n.h., each with BPMA handstamp on reverse, very fine and scarce. (Image)

1968-69 2d, 3d, 4d, 5d, 6d, 8d and 1s Postage Due imperf. imprimaturs, mint n.h. lower marginals with "NPM IMPRIMATUR" handstamps on reverse, very fine and very rare. (Image)