8c Pan-American (298).
Mint N.H., sharp proof-like impressions, wide margins, fresh and Extremely
Fine, with 1996 P.F. certificate (Image) 
8c Pan-American (298).
Mint N.H., choice centering, deep shade, Extremely Fine Gem, with 2000 P.F.
certificate for vertical strip of three
(Image) 
8c Pan-American (298).
Mint N.H., detailed impression, post-office fresh and Extremely Fine, with
2000 P.F. certificate for vertical strip of three, this being the bottom
stamp (Image) 
8c Pan-American (298).
Mint N.H., well-centered, rich colors, Very Fine and choice, with photocopy
of 2000 P.F. certificate for vertical strip of three, this being the top
stamp (Image)
8c Pan-American (298).
Mint N.H. bottom plate no. and imprint block of eight with part
arrowFINE-VERY FINE. A BEAUTIFUL AND SCARCE MINT NEVER-HINGED PLATE BLOCK OF THE 8-CENT PAN-AMERICAN ISSUE.
With 2000 P.F. certificate (Image)
10c Pan-American (299).
Mint N.H., superb centering, post-office fresh and Extremely Fine, a
beautiful stamp, with photocopy of 2000 P.F. certificate for block of four,
this being the bottom right stamp (Image) 
10c Pan-American (299).
Mint N.H., fresh and bright color, near perfect centering, Extremely Fine
Gem, with 2000 P.F. certificate for vertical pair, this being the top stamp
(Image) 
10c Pan-American (299).
Mint N.H., bright fresh colors, choice centering, Extremely Fine, with
photocopy of 2000 P.F. certificate for vertical strip of three, this being
the center stamp (Image)
10c Pan-American (299).
Mint N.H. bottom left plate no. and imprint block of eight, beautifully
centered, deep rich colors on fresh paperEXTREMELY FINE. A GORGEOUS MINT NEVER-HINGED PLATE NUMBER BLOCK OF THE 10-CENT PAN-AMERICAN ISSUE.
This is one of the few 10c Pan-American plate blocks we have encountered with consistently Extremely Fine centering in Mint N.H. condition. (Image)