1c Pan-American, Center
Inverted (294a). Lightly hinged, deep rich color, choice
centeringVERY FINE AND CHOICE. A REMARKABLY CHOICE SOUND ORIGINAL-GUM EXAMPLE OF THE ONE-CENT PAN-AMERICAN INVERT.
The 1c Pan-American Inverts were found in at least four different post offices around the country. (Image)
1c Pan-American, Center
Inverted (294a). "Lowell Mass" oval cancellation, deep rich colors,
small creases and tears ##FINE APPEARING EXAMPLE OF THE ONE-CENT
PAN-AMERICAN INVERT.## Used 1c Pan-American Inverts are
considerably rarer than their unused counterparts. With 1991 P.F.
certificate. (Image) 
4c Pan-American, Center
Inverted (296a). Beautiful colors, full original gum showing usual
slight disturbance, unusually well-centered and freshVERY FINE AND CHOICE EXAMPLE OF THE 4-CENT PAN-AMERICAN INVERT. SCARCE IN SUCH PRISTINE CONDITION.
The 4c Pan-American Invert was a special printing and not regularly issued. Examples were distributed through two official channels, and the gum on the majority of stamps without "Specimen" overprint was disturbed. In fact, because the stamps were removed from mounting paper, they are generally thinned or have seriously disturbed gum. Examples with full intact gum are very scarce.
With 2004 P.S.E. certificate (Image)
4c Pan-American, Center
Inverted (296a). Unused (no gum), bright colors, few small tears and
creases, reperfed at rightFINE APPEARING EXAMPLE OF THE 4-CENT PAN-AMERICAN INVERT.
With 2005 P.F. certificate (Image)
2c Pan-American (295).
Mint N.H., massive margins, intense colors, Extremely Fine Gem, a huge
stamp (Image) 
2c Pan-American (295).
Mint N.H., uncommonly wide margins, perfectly centered, Extremely Fine Gem,
with photocopy of 2002 P.F. certificate for block of four (bottom right
stamp) (Image) 
4c Pan-American (296).
Mint N.H. top imprint margin single, beautifully centered, fresh and crisp,
Extremely Fine, with photocopy of 1999 P.F. certificate for strip of three
(center stamp) (Image) 
5c Pan-American (297).
Mint N.H., perfect centering with well-proportioned margins, Extremely Fine
Gem, with 1999 P.F. and 2005 P.S.E. certificates (XF-Superb 95) (Image) 
5c Pan-American (297).
Mint N.H., deep rich colors, choice centering, Extremely Fine, with 2005
P.F. certificate (Image) 
8c Pan-American (298).
Mint N.H., deep rich colors and proof-like impressions, well-proportioned
margins, fresh and Extremely Fine, with 2002 P.S.E. certificate (XF 90) (Image) 
10c Pan-American (299).
Very lightly hinged, appears Mint N.H. at a glance, incredibly wide margins
and perfectly centered, intense colors on bright paper, Extremely Fine Gem,
with 1999 P.F. certificate (Image)