10c Blue, Special Delivery
(E1). Original gum, lightly hinged, bright color, perfectly centered
with Jumbo margins rarely seen on this issue, Extremely Fine, a huge stamp
in outstanding condition, with 1984 P.F. certificate
(Image) 
10c Blue, Special Delivery
(E1). Original gum, trace of hinge, bright color, Very Fine and choice
(Image) 
10c Blue, Special Delivery
(E2). Original gum, lightly hinged, unusually wide margins, Very Fine
and choice (Image)
10c Blue, Special Delivery
(E4). Mint N.H., remarkably choice centering with wide even margins,
deep rich color and proof-like impression on bright white
paperEXTREMELY FINE MINT NEVER-HINGED EXAMPLE OF THIS NOTORIOUSLY CHALLENGING UNWATERMARKED BUREAU ISSUE.
With 1987 P.F. certificate (Image)
10c Blue, Special Delivery
(E5). Original gum, lightly hinged, intense color and sharp impression,
outstanding centering, Extremely Fine, with 1979 P.F. certificate (Image) 
10c Ultramarine (E9). Mint
N.H. with intact perfs at right, pastel shade on bright white paper,
Extremely Fine (Image) 
10c Pale Ultramarine, Special
Delivery (E10). Mint N.H., pretty pastel shade, perfectly centered with
remarkably huge even margins, Extremely Fine Gem, with 1985 P.F.
certificate (Image)