DEPARTMENTAL ISSUES: I R OFFICIAL 1882-91 1d lilac, overprinted in blue-back, a lower right corner block of six showing plate letter 'N' and damage to Jubilee line at foot. Fine unmounted on (mounted in margin only). A rare block. BPA Certificate (2018). SG O3a, £1,500 (as singles) (Image)

1890 10s Ultramarine (I.R. Official). Very fine used example lettered HD, overprinted “I.R. OFFICIAL“ in blue-black and showing variety raised stop after “R“. Neatly cancelled by a crisp Aberdeen double ring cds for JU.10.1893. Very rare so fine. 1939 BPA Cert. Spec. L8(4)ba. (Image)

1885 £1 Brown-lilac (I.R. Official, Wmk. Crowns). Very fine unused o.g. bottom marginal example lettered JC, overprinted "SPECIMEN" type 11, showing "Broken frame" variety at foot. A lovely example of this difficult high value departmental issue Spec. L9sa. (Image)

1892 £1 Green (I.R. Official). Very fine and fresh unused example lettered LD overprinted "SPECIMEN" type 9. Very scarce so fine. (Image)

I.R.OFFICIAL: 1892 £1 green (LD), neatly cancelled by crisp 'Sunderland DE 14 01' cds, very fresh colour, very fine SG O16 £2,500 (Image)

1901 1s Green & carmine (I.R. Official). Superb unused o.g. example of this difficult departmental issue. An exceptional example. 2012 BPA Cert. (Image)

OFFICE OF WORKS: 1896-1902 10d purple and carmine neatly cancelled by light cds. Good. BPA Certificate (1969). SG 035, £2,250 (Image)

DEPARTMENTAL ISSUES: O W OFFICIAL 1902-03 2½d ultramarine, variety 'C. W.' for 'O.W.' neatly cancelled by part London hooded circle. Very fine and an exceptionally rare stamp (Wiseman estimated that no more than five examples are known to exist). BPA Certificate (1985). SG O39 var, Spec MO17a (Image)

OFFICE OF WORKS: 1902-03 10d dull purple and carmine neatly cancelled by light registered oval cds; rounded top left corner otherwise good colour. An excellent space filler of this rare departmental issue. Fair. RPS Certificate (2012). SG 040, £7,000 (Image)

1883 9d Dull green (Govt. Parcels). Superb unused o.g. imperforate imprimatur lettered GT, very scarce only 29 possible examples in private hands. (Image)