ARGENTINA - 1899 - 1903 20p red & black 'Liberty Seated' perf 11½ with 'MUESTRA' overprints, Scott 142 (SG 241), fine mint corner block of 4 with three of the stamps being never hinged. (4 stamps) (Image1)

Est. £120-130

ARGENTINA - 1910 12c 'Congress Building' Spanish Viceroy Centenary, IMPERFORATE PROOF BLOCKS OF FOUR on thick card, ten blocks in nine different unissued colour combinations, clean & fine condition (10 blocks). (Image1)

Est. £100-120

ARGENTINA - 1910 Centenary of Independence complete set of IMPERFORATE plate proofs in unissued colours (16 proofs) (Image1)

Est. £50-60

ARGENTINA - 1910 IMPERF PROOFS of the Centenary of Deposition of the Spanish Viceroy set, SG 366/81 (Scott 160/75), chiefly on thick card with many spectacular, unissued colour combinations (270 proofs). (Image1)

Est. £650-800

ARGENTINA - 1910 IMPERF PROOFS of the Centenary issue with different colour combinations, on thin ungummed paper (+/-170 proofs) (Image1)

Est. £400-500

ARGENTINA - 1910 IMPERF COLOUR PROOFS Centenary all different imperf colour trial proofs recess printed in unissued colours on thick card, includes four different examples of each value (Scott 160/75, SG 366/81). Lovely. (64 proofs) (Image1)

Est. £125-150

ARGENTINA - 1910 IMPERF COLOUR PROOFS 2c, 5c & 10c Centenary all different imperf colour trial proofs BLOCKS of 4 recess printed in unissued colours on thick card, includes 2c (x10), 5c (x6) & 10c (x8) different colours. Lovely. (22 blocks = 88 proofs) (Image1)

Est. £175-200