Agriculture Dept., 1875 Special Printing, 1¢ yellow, overprinted "Sepcimen" (error) (O1SDa). Without gum as issued, nicely centered, rich color, F.-V.F., only about 20 are known (photo). $2,500

Expertization: with 2008 P.F. certificate graded F 70. Scott $2,500 (Image)

Scott $2,500

Agriculture Dept., 1875 Special Printing, 2¢ yellow, overprinted "Sepcimen" (error) (O2SDa). Without gum as issued, typical centering, brilliant color, light horizontal crease, choice Fine appearance, 8-10 known (photo). $3,000

Provenance: Leventhal, Huggins. Scott $3,000 (Image)

Scott $3,000

Executive Dept., 1875 Special Printing, 2¢ carmine, overprinted "Specimen" foreign entry of 6¢ Agriculture (O11SD var.). Without gum as issued, position 40, natural straight edge at right as always, a bit of rubbing at right, otherwise Very Fine, rare variety (photo). $2,250 Scott $2,250 (Image)

Scott $2,250

Interior Dept., 1875 Special Printing, 3¢ vermilion, overprinted "Specimen" (O17SD). Without gum as issued, well centered, exquisite color, some blunted perfs at top right from scissor separation as often, Very Fine, only 88 sold (photo). $2,500 Scott $2,500 (Image)

Scott $2,500

Interior Dept., 1875 Special Printing, 10¢ vermilion, overprinted "Specimen" (O19SD). Without gum as issued, nicely centered, intact perforations, rich color, F.-V.F., only 82 sold (photo). $2,500 Scott $2,500 (Image)

Scott $2,500

Interior Dept., 1875 Special Printing, 12¢ vermilion, overprinted "Specimen" (O20SD). Without gum as issued, fully intact perforations all around, rich color, a bit of extraneous ink, Very Fine, only 75 sold (photo). $2,500 Scott $2,500 (Image)

Scott $2,500

Interior Dept., 1875 Special Printing, 15¢ vermilion, overprinted "Specimen" (O21SD). Without gum as issued, vivid color, scissor separated but perforations visible all around, Very Fine, only 78 sold (photo). $2,500 Scott $2,500 (Image)

Scott $2,500

Justice Dept., 1875 Special Printing, 1¢ purple, overprinted "Sepcimen" (error) (O25SDa). Without gum as issued, prooflike color, trivial thin, Very Fine appearance, scarce variety (photo). $1,900 Scott $1,900 (Image)

Scott $1,900

Justice Dept., 1875 Special Printing, 2¢ purple, overprinted "Sepcimen" (error) (O26SDa). Without gum as issued, well centered, perfs virtually intact, fresh F.-V.F (photo). $3,500

Expertization: with 2009 P.F. certificate.

Provenance: Sheriff, where it was described as having a thin, which it absolutely does not. Scott $3,500 (Image)

Scott $3,500

Justice Dept., 1875 Special Printing, 3¢ purple, overprinted "Specimen" (O27SD). Without gum as issued, scissor separated, perfs mostly intact, Fine, only 178 sold (photo). $1,250 Scott $1,250 (Image)

Scott $1,250

Justice Dept., 1875 Special Printing, 6¢ purple, overprinted "Specimen" (O28SD). Without gum as issued, virtually perfectly centered, exceptionally fresh, an Extremely Fine gem. Only 163 sold (photo). $1,250

Expertization: with 2010 P.S.A.G. certificate graded XF 90. Scott $1,250 (Image)

Scott $1,250

Justice Dept., 1875 Special Printing, 10¢ purple, overprinted "Specimen" (O29SD). Without gum as issued, perfs fully intact, trifle pale shade, Fine, only 163 sold (photo). $1,250 Scott $1,250 (Image)

Scott $1,250

Justice Dept., 1875 Special Printing, 12¢ purple, overprinted "Specimen" (O30SD). Without gum as issued, perfs virtually intact, bright color, F.-V.F., only 163 sold (photo). $1,250 Scott $1,250 (Image)

Scott $1,250

Justice Dept., 1875 Special Printing, 15¢ purple, overprinted "Specimen" (O31SD). Without gum as issued, well centered, vivid color, usual slightly blunted perfs but all visible, Very Fine, only 157 sold (photo). $1,250 Scott $1,250 (Image)

Scott $1,250

Justice Dept., 1875 Special Printing, 24¢ purple, overprinted "Specimen" (O32SD). Without gum as issued, very well centered, full perforations, stunning color, choice Very Fine, only 150 sold (photo). $1,250 Scott $1,250 (Image)

Scott $1,250

Justice Dept., 1873, 24¢ purple (O32). Disturbed original gum, three jumbo margins, F.-V.F. SMQ $975 (photo). $1,250

Expertization: with 2003 P.S.E. certificate graded F-VF 75. Scott $1,250 (Image)

Scott $1,250

Justice Dept., 1875 Special Printing, 30¢ purple, overprinted "Specimen" (O33SD). Without gum as issued, beautifully centered, brilliant color, perfs slightly blunted from scissor separation but all visible, Extremely Fine, only 150 sold (photo). $1,250 Scott $1,250 (Image)

Scott $1,250

Justice Dept., 1873, 30¢ purple (O33). Large part original gum, stunning color, fresh and Very Fine (photo). $1,300

Expertization: with 1985 P.F. certificate and 2009 P.S.E. certificate. Scott $1,300 (Image)

Scott $1,300

Navy Dept., 1875 Special Printing, 1¢ ultramarine, overprinted "Sepcimen" (error) (O35SDa). Without gum as issued, intact perfs except pulled perf bottom left, otherwise Fine (photo). $2,750 Scott $2,750 (Image)

Scott $2,750

Navy Dept., 1875 Special Printing, 1¢ gray blue, overprinted "Specimen", soft paper, double overprint (O35xSDa). Without gum as issued, without gum as issued, couple tiny trifling perf flaws, still Fine and rare (photo). $1,200

Expertization: with 2010 Weiss certificate. Scott $1,200 (Image)

Scott $1,200

Navy Dept., 1875 Special Printing, 2¢ ultramarine, overprinted "Sepcimen" (error) (O36SDa). Without gum as issued, nicely centered, faint pressed crease, tiny thin, handsome Fine appearance (photo). $4,500

EXCEEDINGLY RARE, AND WHILE UP TO 18 WERE SOLD, WE HAVE SEEN VERY FEW OF THE 2¢ "SEPCIMEN" AND EVEN THE MARKOVITS COLLECTION LACKED AN EXAMPLE.

Provenance: Golden. Scott $4,500 (Image)

Scott $4,500

Navy Dept., 1875 Special Printing, 3¢ ultramarine, overprinted "Specimen" (O37SD). Without gum as issued, well centered, perfs with scissor separation as often but visible all around, Very Fine, only 126 sold (photo). $1,750 Scott $1,750 (Image)

Scott $1,750

1875 Special Printing, 6¢ Navy Dept., ultramarine, overprinted "Specimen" (O38SD). Without gum as issued, well centered, bright color, small light thin, choice Very Fine appearance (photo). $1,750 Scott $1,750 (Image)

Scott $1,750

Navy Dept., 1875 Special Printing, 10¢ ultramarine, overprinted "Specimen" (O40SD). Without gum as issued, well centered, rich color, some blunted perfs from scissor separation, Very Fine, and only 112 sold (photo). $1,750 Scott $1,750 (Image)

Scott $1,750

Navy Dept., 1875 Special Printing, 24¢ ultramarine, overprinted "Specimen" (O43SD). Without gum as issued, excellent centering, perfs slightly blunted but visible at top and bottom, fresh Very Fine, only 106 sold (photo). $1,750 Scott $1,750 (Image)

Scott $1,750