1863-67, "Rivadavia" 5c group of ten plate proofs, five types, all imperforate except one printed on watermarked perforated paper, including one 1866 interesting pair for the 5th Printing on horizontally and vertically ribbed paper in the manner of "quadrillé"; in addition three used examples from the 8th printing and a small group of forgeries. (Image)

Est. $250-300

Kn #16; GJ #16; 1st Printing Imperforate, 1864 5c Brick red, a magnificent example from the top of the sheet, good to predominantly huge margins displaying frame line of adjoining adhesive at left, very lightly cancelled by dotted oval leaving the design very clear, superb (GJ $250+). (Image)

Est. $100-150

Kn #16; GJ #16; 1st Printing Imperforate, 1864 5c Red rose, ample margins, cancelled by "Ponchito" cancel of Buenos Aires, a scarce and desirable usage; signed V. Kneitschel. (Image)

Est. $150-200

Kn #16; GJ #16; 1st Printing Imperforate, 1864 5c Red, three examples displaying pre-printing fold, in red-rose and dark brick-red shades, the latter originating from the left of the sheet, clear to very large margins, cancelled by dotted oval and blue "OM" postmarks, very fine and unusual; ex "Patagonia" collection. (Image)

Est. $300-400

Kn #16b; GJ #16b; 1st Printing Imperforate, 1864 5c Brick red, watermark reversed, clear to predominantly large margins, cancelled by oval blue handstamp of Concordia, fine (GJ $500) (Image)

Est. $150-200

Kn #16f; GJ #16f; 1st Printing Imperforate, 1864 5c Brick red, scratched paper and watermark reversed, very good margins for the most part, cancelled at right in blue by "O.M." maritime office cancellation, leaving the profile of Rivadavia clear; very fine and rare; signed V. Kneitschel (GJ $1,200). (Image)

Est. $500-750

Kn #16f; GJ #16f; 1st Printing Imperforate, 1864 5c Red rose, watermark inverted, additionally possessing a pre-printing paper fold, cancelled by "O.M." barred oval in blue of Buenos Aires; small tear at top commencing in the pre-printing paper fold at top and minute thin spot, nevertheless a desirable and very scarce stamp featuring both varieties; signed V. Kneitschel (GJ $1,200+). (Image)

Est. $150-250

Kn #16, #16c; GJ #16, #16c; 1st Printing Imperforate, 1864 5c Red, a remarkable group of twelve examples, one unused without gum and well margined (small thin spot), the other eleven being all except three with good margins ranging from clear to very large, including one example printed on thin paper and one possessing horizontally and vertically ribbed paper in the manner of "quadrillé", with six different cancellations including one, cancelled at San Nicolás, additionally featuring the rare reversed watermark; mainly very fine. (Image)

Est. $800-1,000

Kn #17; GJ #17; 1st Printing Imperforate, 1864 10c Yellowish green, complete to large margins, cancelled by "OM" oval and "Franca" of Goya straight-line handstamps, both struck in blue but in different shades, very fine and a scarce usage (GJ $1,750+). (Image)

Est. $1,000-1,500

Kn #17; GJ #17; 1st Printing Imperforate, 1864 10c Green, pre-printing paper fold variety disposed vertically, complete to very large margins enabling to display neighboring adhesive at left, cancelled by indistinct black postmark and "Correos del Paraná" datestamp in blue, very fine and scarce; 2003 R. Kneitschel certificate (GJ $1,750+). (Image)

Est. $750-1,000

Kn #17a; GJ #17a; 1st Printing Imperforate, 10c Green, watermark reversed, an outstanding example for the following attributes: a sheet margin at top which is accompanied by very large margins on other sides, a great freshness and the neat and clean application of the "O.M." Maritime Office barred oval in blue, which leaves clear most of of the design of Bernardino Rivadavia; a quintessential combination of beauty for this exceedingly rare stamp featuring this desirable watermark's variety; 2007 R. Kneitschel certificate -described as "pieza notable"- (GJ $3,500). (Image)

Est. $2,000-2,500

Kn #18; GJ #18; 1st Printing Imperforate, 1864 15c Blue, good color and great freshness, used with dotted oval handstamp of Buenos Aires, just touching at base and repaired at lower right, nevertheless a still desirable and very rare stamp (GJ $6,500). (Image)

Est. $250-500

Kn #19; GJ #19; 1st and 2nd Printing Perforated, 1864 5c Brick red, cancelled by rectangular dotted cancel on unknown origin, but most probably originating from Corrientes or Uruguay, this being the only example recorded of this cancellation on any Argentine stamp. (Image)

Est. $150-200

Kn #19; GJ #19; 1st and 2nd Printing Perforated, 1864 5c Brick red, two singles cancelled by scarce "La Nueva Mensajería/Victoria 366" oval handstamp, and pair showing complete strike of Chascomus oval, all struck in blue; fine. (Image)

Est. $200-300

Kn #19; GJ #19; 1st and 2nd Printing Perforated, 1864 5c Red, seven examples cancelled by different "Mensajería" cancellations, including Picot, D. Esperatti in Lobos, Pablo E. Díaz, Unión Argentina at Victoria 223, and Mensagerías at Rivadavia 305, Protegida de Navarro y Lobos/P. Capdeville y Paget (small tear); a fine and very infrequent group. (Image)

Est. $300-400

Kn #19; GJ #19; 1st Printing Perforated, 1864 5c Red, pre-printing paper folds, group of ten unused without gum (3) and seven used examples, including one showing scarce "Ponchito" cancel in blue, fine-very fine. (Image)

Est. $200-300

Kn #19c; GJ #19c; 1st Printing Perforated, 1864 5c Red rose, watermark inverted, two unused examples showing contrasting states of impression, unused without gum, very fine (GJ $1,200). (Image)

Est. $400-500

Kn #19c; GJ #19c; 1st and 2nd Printing Perforated, 1864 5c Red rose, watermark inverted, two examples in contrasting shades, one additionally featuring a pre-printing paper fold, lightly cancelled leaving the portrait of Rivadavia clear, the other cancelled by mute oval handstamp, a very fine duo (GJ $600+). (Image)

Est. $200-300

Kn #19c; GJ #19c; 1st Printing Perforated, 1864 5c Red, watermark inverted, five used examples displaying different cancellations, one with small faint corner crease, a fine group (GJ $1,200). (Image)

Est. $400-500

Kn #19i(var); GJ #19PH(var); 1st Printing Perforated, 1864 5c Red rose, watermark reversed, imperforate horizontally, an extraordinary pair showing a very fine clear impression, highly remarkable for possessing both varieties -only the imperforate horizontally characteristic is already a very rare variety-, showing a complete strike of the "Salta" oval handstamp; to our knowledge, the only example so far recorded featuring these two varieties, unlisted in both Kneitschel and Jalil catalogues, of great significance and desirability for the advanced "Rivadavias" collector; one pair with the variety imperforate vertically (which is of similar scarcity as the imperforate horizontally), but that item not having an inverted watermark, was sold for €3,360 in the Investphila sale of the "Patagonia" collection in 2009; Solari-Mautalén certificate (presumably issued in 1988). (Image)

Est. $2,500-3,000

Kn #19j; GJ #19PV; 1st and 2nd Printings Perforated, 1872 5c Rose-red, pair imperforate vertically, exhibiting this impressive variety and cancelled by oval blue handstamp of Concordia; one of only two items recorded -both showing the same cancellation- and representing the largest multiple recorded featuring this imperforate variety; these two known pairs originate from the ninth and tenth vertical rows of the sheet; 2007 R. Kneitschel certificate and described as "pieza notable" (GJ $3,000). (Image)

Est. $1,500-2,000

Kn #19; GJ #19; 1st Printing Perforated, 1864 5c Brick-red, on 1868, May 27 folded letter to Tupiza, Bolivia, tied by "rococó" oval handstamp of Humahuaca, Jujuy; small paper loss in center at base of the cover, otherwise fine and rare. (Image)

Est. $200-300

Kn #19, #19g; GJ #19, #19g; 1st and 2nd Printing Perforated, 1864 5c Brick-red, two covers, one featuring the scratched plate variety tied by "Correos del Paraná" datestamp in blue, the other, the regular stamp, used with "O.M." barred oval in blue, good to fine. (Image)

Est. $150-200

Kn #19; GJ #19; 1st and 2nd Printing Perforated, 1864 5c Red, a remarkable assembly containing over 150 stamps in used condition for the great majority, including pairs, a wide range of shades and cancellations with "rococó" examples, manuscript usages and other interesting pre-adhesive cancellations, nine copies featuring watermark reversed or inverted of which one used on large fragment, unusual "mulato" printings, partial double impressions, several pre-printing paper folds, one example with inverted watermark, scratched-plate impressions, etc, additionally enriched by single franking on cover from Chivilcoy to Buenos Aires (signed M. Kurchan); generally very fine, detailed viewing recommended for a comprehensive lot featuring a wide-ranging exhibit of these perforated printings. (Image)

Est. $2,000-3,000

Kn #20c; GJ #20c; 3rd Printing Perforated, 1865 5c Red-brown, watermark reversed, three examples showing different usages including "rococó" of Yaví (a rare combination of both unusual features), manuscript cancel and dotted oval; good to fine (GJ $900) (Image)

Est. $200-300