Scott #510a, 10c Brown yellow, an intense shade variety which is easily distinguishable from the normal printing color, well centered for this, pristine o.g., n.h., very fine; a rare opportunity to acquire an example of this rare shade as this is the first example we have had the opportunity to offer in our auctions; 2009 PF certificate.

Spink Shreves Galleries, Nov 2012, Sale 141, Lot 178

10c Orange Yellow (Scott 510). Jumbo margins and precise centering, fiery color on bright white paper, Extremely Fine Gem, with 2011 P.F. and 2005 P.S.E. certificates (Superb 98 Jumbo, SMQ $275.00 as 98, unpriced in higher grade), only two have graded higher

Robert Siegel Auction Galleries, Oct 2012, Sale 1032, Lot 3597

1917, 10¢ orange yellow (Scott 510), impressive full wide top with wonderfully rich color, lightly hinged on top center stamp only, top margin plate block of 6 with plate number 10628, o.g., lightly hinged (5 stamps never hinged), Very Fine to Extremely Fine. Scott $200. Estimate $200 – 300.

Daniel Kelleher Auctions, Oct 2012, Sale 632, Lot 1389

10c Orange Yellow (Scott 510). Vivid color as fresh as the day it was printed, mathematically precise centering with Jumbo margins, neat strike of Philadelphia oval registry cancel, Extremely Fine Gem, a superb stamp in every respect, with 2009 P.S.E. certificate (Gem 100 Jumbo, unpriced in SMQ above the grade of 98, SMQ value $275.00 as 98), this is the highest grade possible on the grading chart and only one other has achieved this perfect grade

Robert Siegel Auction Galleries, Sep 2012, Sale 1028, Lot 432

1917, 10¢ orange yellow, printing freak (Scott 510 var.), magificent right sheet margin single with interesting printing freak showing part of the design on the front and the other part of the design printed on reverse in the wide right selvage, caused by pre-printing foldover during the printing process, an eye catching freak, o.g., hinge remnant, Fine. Estimate price $200 – 300. (Image 2)

Daniel Kelleher Auctions, Aug 2012, Sale 631, Lot 1402

1917, 10¢ orange yellow (Scott 510), left plate block of 6, o.g., never hinged, select wide side, brilliant rich color, nicely centered with the lower left stamp being exceptional, Very Fine. Scott $325. Estimate value $300 – 400.

Daniel Kelleher Auctions, Aug 2012, Sale 631, Lot 1258

1917, 10¢ orange yellow (Scott 510), top plate block of 6, o.g., never hinged, fabulous wide full top with bold color, an immaculate example of this undervalued plate block in a quality rarely found, Very Fine. Scott $325 Estimate value $250 – 350.

Daniel Kelleher Auctions, Apr 2012, Sale 629, Lot 369

1917, 10¢ orange yellow (510), wide top margin plate no. block of 6, fresh and solid with brilliant color, original gum, never hinged, F.-V.F. Scott $325

Matthew Bennett International, Mar 2012, Sale 344, Lot 4634

10c Orange Yellow (Scott 510). Mint N.H., vivid color, Jumbo margins, Extremely Fine Gem, with 2000 P.F. certificate

Robert Siegel Auction Galleries, Mar 2012, Sale 1019, Lot 865

1917, 10¢ orange yellow (Scott 510), o.g., never hinged, magnificent GEM quality example of this tough stamp, extra large margins and bold rich color, a stamp that would please the most quality conscious collector, Extremely Fine to Superb, 2011 P.S.E. certificate graded XF-SUP-95 (1 of 7 at this grade, only 2 others grade higher). SMQ value $650. Scott $36.

Daniel Kelleher Auctions, Oct 2011, Sale 626, Lot 408

10c Orange Yellow (Scott 510). Mint N.H., vivid color as fresh as the day it was printed, gorgeous centering with Jumbo margins, Extremely Fine Gem, with 2011 P.S.E. certificate (Superb 98 Jumbo, unpriced in SMQ above the grade of 98, SMQ value $650.00 as 98), this is the highest grade awarded to date and only one other shares this grade

Robert Siegel Auction Galleries, Oct 2011, Sale 1014, Lot 2004

10c Orange Yellow (Scott 510). Mint N.H., vibrant color, wide and balanced margins, Extremely Fine Gem, with 2010 P.S.E. certificate (Superb 98, SMQ $880.00), only one has graded higher and only five others share this desirable grade

Robert Siegel Auction Galleries, Dec 2010, Sale 1000, Lot 1236

10c Orange Yellow (Scott 510). Mint N.H. with plate no. 10734 in selvage at left, vibrant color, wide and balanced margins, Extremely Fine Gem

Robert Siegel Auction Galleries, Sep 2009, Sale 968B, Lot 677

10c Orange Yellow (Scott 510). Mint N.H., intense shade reminiscent of the scarce Brown Yellow shade, wide and balanced margins, Extremely Fine Gem, with 2004 P.S.E. certificate (XF-Superb 95, SMQ price $325.00)

Robert Siegel Auction Galleries, Jun 2009, Sale 975, Lot 1931

10c Orange Yellow (Scott 510). Mint N.H. with plate no. 11746 at bottom, vibrant color, Jumbo margins, Extremely Fine Gem, with 1985 and 1994 P.F. and 2008 P.S.E. certificates (XF-Superb 95 Jumbo, SMQ $325.00 as 95, $1,100.00 as 98)

Robert Siegel Auction Galleries, Jun 2009, Sale 975, Lot 1930