The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #29 ARGENTINA 1899 Liberty, 1p blue & black, center inverted, lower left sheet corner margin block of six, with part imprint and plate number (inverted as well), three stamps lightly hinged, others never hinged, each stamp pencil signed by Kneitchel, also with 2002 PFC noting a pinhole at bottom right stamp (really of no importance), fine-v.f. and impressive showpiece (YT 127a, catalogue value for hinged singles)  */**Catalog #139a Catalog Value €18,000 | Unsold |
 | Lot #30 ARGENTINA 1899 Liberty, 1p blue & black, center inverted, used, usual centering and perforations, fine and sound example of this inverted center with parcel post cancel, with 1998 APS cert. (YT 127a) O Catalog #139a Catalog Value €700 | Price Realized $525.00 |
 | Lot #31 ARGENTINA 1899 Liberty, 5p orange & black, center inverted, usual evenly toned original gum, h.r., well centered for this difficult stamp, signed Rosalia etc., with 2002 APS cert. Only 50 printed (YT 128a) * Catalog #140a Catalog Value €4,000 | Unsold |
 | Lot #32 ARGENTINA 1899 Liberty, 5p orange and black Liberty, inverted center, block of ten with selvage at both sides, rich colors, full original gum, six stamps never hinged, with 2002 PFC, a magnificent showpiece item, only 50 (!) printed, this is the largest known multiple of this error which actually represents 20 per cent of the entire known issue (Kneitchel records this unique block of 10 as "Piezas Notables") (YT 128a; catalogue value for hinged singles) */**Catalog #140a Catalog Value €40,000 | Unsold |
 | Lot #33 ARGENTINA 1899 Liberty, 10p green and black, center inverted, right sheet margin copy, unusually well centered, h.r., slight gum glazing and imperceptible soiling at upper right, fine and rare stamp, only 25 printed, with 2002 APS cert., ex-Sellinger (YT 129a) * Catalog #141a Catalog Value €8,500 | Price Realized $4,000.00 |
 | Lot #34 ARGENTINA 1899 Liberty, 20p red and black, center inverted, horizontal left sheet margin pair, with invalidating perforations ("Inutilizado"), usual natural slightly toned gum, well centered and fresh, l.h., with 2002 APS cert. stating "rejoined pair". A rarity, as only 25 inverted centers recorded, all with invalidating perfs (Kneitchel records this unique pair among "Piezas Notables"), ex-Sellinger (YT 129a) * Catalog #142a Catalog Value €6,000 | Price Realized $4,250.00 |
 | Lot #35 ARGENTINA 1910 Centenary of the Republic, 1/2c black & gray, 1c blue green & black, 2c olive & gray, 4c dark blue & green, 12c bright blue, 50c carmine & black, also 5p orange & violet, seven different, each with center inverted, well centered, lightly hinged and incredibly fresh, pencil signed Kneitschel and Diena, with 1988 Dr.Enzo Diena certificate. This is the complete set of inverted centers from this issue, each in unusually nice condition (in fact Diena mentions that most of these errors were recovered from printer's waste and are usually "crumpled") (YT 148/61var) * Catalog #160a/173a Catalog Value €6,300 | Price Realized $4,750.00 |
 | Lot #36 ARGENTINA 1910 Centenary of the Republic, 12c bright blue, bottom imprint sheet margin plate proof on card, center inverted, v.f P Catalog #167aP | Unsold |
 | Lot #37 ARGENTINA 1917 San Martin, 20p blue & claret, center inverted, l.h., with 2002 PFC. Only 50 issued, all off centered (Kneitchel No.312a "todos los ejemplares de esta hojo unica son descentrados") (YT 227a) * Catalog #246a Catalog Value €1,400 | Price Realized $1,000.00 |
 | Lot #38 ARGENTINA 1948 Bicentennial, imperf. souvenir sheet of four, proof in unissued colors, brown (85c value and "Correos Y Tellecomunicaciones") inverted, v.f., unlisted and undoubtedly rare variety, with 2010 PFC ("unused proof of souvenir sheet in unadapted colors, brown inverted; the souvenir sheet is an unauthorized favor printing") PCatalog #582Pvar | Price Realized $325.00 |
 | Lot #39 ARGENTINA 1987 Centenary of the Philatelic Society of Argentina, $1 imperf. bottom sheet corner margin imperf. pair, yellow color shifted and inverted, n.h., v.f. ** | Unsold |
