Stampless folded letter from the 'Ministerio de Guerra y Marina' with manuscript endorsement on front with fine CORREOS DE BUENOS AIRES 22 JUN 60 cds. Addressed to VILLA DE MERCEDES. [US8] (Start Price = £9.60)

GB 4d vermilion, plate 11, GL, slightly smudged 'B32' postmark, very fresh, g.u. [US3] (Start Price = £9.60)

Cover franked with pair 1899 5c red 'Liberty Shield' issue (SG 226) tied by fine strike of RAWSON (CHUBUT) cds. Addressed to URUGUAY with arrival mark on reverse. Rawson was one of the original Welsh settlements in Patagonia. Uncommon. [US8] (Start Price = £9.60)

Cover franked with France 1900 5c blue green 'Blanc' issue and pair 1903 10c rose 'Sower' issue all tied by multiple strikes of octagonal BUENOS AYRES A BORDEAUX 1 L.J No.1 cds dated 10 JUNE 1906. Addressed to BELGIUM with arrival cds's on reverse. [US8] (Start Price = £8.80)

San Martin 5p and 10p, h/r, fresh m.m. [US2] (Start Price = £17.60)

Air set ex 90c mint(18), some light creasing (Start Price = £35.20)

Zeppelin set(3) fine m.m. (Start Price = £17.60)

Plain cover with typed 'POR AVION' franked with strip of three 1924 10c grey green 'San Martin' issue (SG 535) tied by ROSARIO cds's. Addressed to CHILE with arrival cds on reverse. [US3] (Start Price = £11.20)

Vegetation 2P,5P,10P fine unmounted mint, also 20P mint creased [US1] (Start Price = £10.40)

Cover franked with 1935 6 x 5c orange brown & 8 x 10c scarlet (SG 649 & 653d) all tied by multiple strikes of CEIBALITO S (Salta) cds. Addressed to UK with 'Via Condor' airmail endorsement. Various transit cds's on reverse. [US3] (Start Price = £8.00)