1854 5c orange, worn plate, position 3, top sheet margin example, unused without gum, slightly discolored, with couple of pinholes, not mentioned on the accompanying clear 1991 Graus certificate, cat. $4000 (Cat No. 1) (Image)

Cat. $4000, Est.$1,000

1854 10c deep carmine, unused without gum, margins all around, splendid color, fresh and v.f., with 2009 COMEX certificate, cat. $700 (Cat No. 2) (Image)

Cat. $700, Est.$500

1855 5c pale red, unused with gum, margins all around, signed Calves, also additional blue handstamped guarantee just showing though on front, fine appearance, cat. $1600 (Cat No. 6) (Image)

Cat. $1600, Est.$500

1855 5c vermilion, unused without gum, margins all around, with 1991 Graus and 1993 Philatelic Foundation certificates, each confirming "genuine with lightened staining at top", fine appearing example of this rarity, cat. $6000 (Cat No. 7) (Image)

Cat. $6000, Est.$1,000

1863 5c vermilion, 10c carmine, 1r violet, 2r blue, 1r gray green and 1r green, complete set of six, unused, 2r without gum, others l.h. or h.r., margins all around, 1r signed Stolow, 2r signed Peter Holcombe, v.f. set, cat. $2251 (Cat No. 14-20) (Image)

Cat. $2251, Est.$1,000

1872 "Habilitado Por La Nacion" 2r blue, unused with traces of gum, additional strike of "Nacion" at top, margins all around, v.f., signed Bartels, I.Koslow, etc., ex-Yacano, cat. $500 (Cat No. 32var) (Image)

Cat. $500, Est.$250

1881 "Habilitado Para Correos" red overprint on 2r blue, double overprint variety, l.h. and well centered, tiny corner perf. crease at upper left, still v.f., with 2010 APS certificate. A rarity, only two (!) reported (catalogued as the normal stamp) cat. $900 (Cat No. 127A,var) (Image)

Cat. $900, Est.$500

1881 "Habilitado Para Correos" blue overprint on 10c bistre, unused part original gum, h.r., signed Kohler, with 2001 APS certificate, cat. $900 (Cat No. 129B) (Image)

Cat. $900, Est.$250