13c Blue Green (339). Mint
N.H., deep rich color and sharp proof-like impression, well-centered, fresh
and Extremely Fine, with 2000 P.F. certificate
(Image) 
15c Pale Ultramarine
(340). Mint N.H., bright and fresh, Extremely Fine, with 1992 P.F.
certificate (Image) 
15c Pale Ultramarine
(340). Mint N.H. bottom margin single with part imprint, wide margins,
bright shade, Extremely Fine Gem, with 2000 P.F. certificate (Image) 
50c Violet (341). Mint
N.H., remarkably bright and freshEXTREMELY FINE GEM. A REMARKABLY CHOICE HIGH-DENOMINATION WASHINGTON ISSUE IN POST-OFFICE FRESH CONDITION.
With 1986 P.F. certificate (Image)
50c Violet (341). Lightly
hinged, well-centered, pretty pastel shade on bright paper, Extremely Fine
and choice, a surprisingly difficult stamp to find this well-centered, with
2000 P.F. certificate (Image) 
$1.00 Violet Brown (342).
Mint N.H., choice centering with wide margins, crisp proof-like
impressionEXTREMELY FINE GEM. AN EXTRAORDINARILY FRESH AND SUPERBLY CENTERED MINT NEVER HINGED EXAMPLE OF THE $1.00 WASHINGTON ISSUE.
The experimental Bluish Paper issue of 1909 was created as part of an effort to combat paper shrinkage, which resulted in a high rate of spoilage and off-center stamps in the earlier 1908 issue, to which this $1.00 Washington belongs. Many values of the set, particularly the high values, are difficult to find in centered Mint N.H. condition.
With 1988 and 1994 P.F. certificates (Image)
$1.00 Violet Brown (342).
Deep dark color and proof-like impression on brilliant paper, wide
marginsEXTREMELY FINE. THE $1.00 1908 WASHINGTON IS A NOTORIOUSLY DIFFICULT STAMP TO FIND IN SUCH CHOICE CONDITION.
With 2000 P.F. certificate (Image)
$1.00 Violet Brown (342).
Block of four, bottom stamps Mint N.H., top stamps lightly hinged, fresh
color, Fine block, Scott Retail as singles
(Image)
$1.00 Violet Brown (342).
Top margin plate no. and imprint block of six, lightly hinged in selvage
only, stamps Mint N.H., rich color, perfectly centered, one toned perf tip,
sealed selvage tear just above imprintEXTREMELY FINE APPEARANCE. A BEAUTIFUL PLATE NUMBER BLOCK OF THE $1.00 WASHINGTON.
Excluding the Bluish Paper issue, this is one of the rarest of the Washington-Franklin plate blocks. As noted in lot 753, the Bureau experienced difficulty with paper shrinkage while printing the 1908 Issue, and the Bluish Paper experiments of 1909 were part of an effort to correct the problem. The 1908 high-denomination stamps are difficult to find well-centered, and plate blocks are extremely rare in higher grades.
Ex Wampler (where it realized $13,200 in the 1998 Shreves sale). (Image)
1c Green, Coil (348). Mint
N.H. guide line pair, perfectly centered with wide and even margins all
around, fresh color and crisp impression, Extremely Fine Gem, a superb
guide line pair in the highest quality attainable, with 1989 P.F.
certificate for guide line strip of six
(Image) 
1c Green, Coil (348).
Guide line pair, lightly hinged, well-centered with wide margins, rich
color, Very Fine and choice, with 2000 P.F. certificate
(Image)