5c black 'Registration' issue (with horizontal lines in centre) worn plate printing, a fine mint marginal block of fifteen. (SG R77) [US11] (Start Price = £8.80)

20c greenish blue on white wove paper, a fine used top marginal block of six with manuscript cancels. [US5] (Start Price = £8.00)

20c blue on buff a pair & single on piece with boxed 'De Oficio' (SPECIMEN) handstamp in black. [US5] (Start Price = £8.00)

Collection of unlisted 'S.C.A.D.T.A.' air stamps on one Prinz stock sheet. Vals 5c to 1p f.u. includes some duplication and two mint stamps a 10c Green with Large 'S' ovpt part o.g. and a 30c Blue with large 'S' u.m. Lovely fresh lot. (27) [US6] (Start Price = £21.60)

SCADTA: 40c purple a fine mint corner marginal block of six. [US5] (Start Price = £16.00)

'Barranquilla Industrial Exhibition' issue, the set of three fine mint. (SG 493/5, Cat £32) (Start Price = £10.40)

25c black ''P.O. Rebuilding Fund' issue the unissued 'Revenue' type a fine unmounted mint copy. (SG Unlisted) [US5] (Start Price = £2.40)

Colour trial horizontal pairs of University issue over printed SPECIMEN(S) or MUESTRA(M), 5c rose red (S & M), 25c lake (M), 50c orange yellow (M), 1 colon black(M), 2 colones blue (M), 5 colones green (S & M). All fresh unmounted pairs with tiny security punch holes. (16) [US8] (Start Price = £9.60)

1c yellow orange 'Tax' issue overprinted with large 'C' with variety OVERPRINT INVERTED fine unused. [US5] (Start Price = £8.00)

'Sixth Pan-American Games' second issue, complete sheet of twenty five fine unmounted mint. (SG 1282a, Cat £50) (Start Price = £16.00)

'The Alphabet' issue, the complete set of thirty in a fine se-tenant block of thirty comprising the top three rows of the sheet with sheet margins on three sides. Fine unmounted mint. (SG 1502a, Cat £34) (Start Price = £11.20)

'Tairona Culture' treasures issue, the set of six fine unmounted mint. (SG 1659/64, Cat £22) (Start Price = £6.40)

'Nature' miniature sheet of eight showing Fish & Birds etc. A fine unmounted mint example. (SG MS2243, Cat £50) (Start Price = £16.00)