1924, 1c Deep Green, Ovpt. Inverted (71a). Deep color, Fine, it is believed only 50 were prin (Image)

$ 500.00

1924, 1c Deep Green, Se-Tenant, "Canal" Only and "Zone Canal" Ovpts. (71c, 71d). Vertical pai (Image)

$ 1,750.00

1924, 15c Gray, Ty. "A" Ovpt. (78). Wide right plate no. 14912 block of six, h.r., rich color (Image)

$ 825.00

1924, 50c Lilac, Ty. "A" Ovpt. (80). Right plate no. 14043 block of six, top stamps h.r., bot (Image)

$ 3,000.00

1924, 30c, 50c, $1.00 Ty. "A" Ovpts. (79, 80, 81). Three high values tied by Cristobal Aug. 2 (Image)

$ 1,000.00

1926, 2c Carmine, Se-Tenant, "Canal" Only and "Zone Canal" Ovpts. (85e). Top sheet margin ver (Image)

$ 3,500.00

1925, 3c Violet, "Zone Zone" Ovpt. (85a). Block of four, top right stamp the error, tropicali (Image)

$ 550.00

1926, 5c Dark Blue, "Zone Canal" (86a). 1st Printing, right selvage block of twelve, error is (Image)

$ 1,000.00

1926, 5c Dark Blue, "Canal" Inverted (86b). Horizontal pair with s.e. at top as always, left (Image)

$ 950.00

1926, 5c Dark Blue, Inverted Overprint (86c). Bottom left selvage block of four, the inverted (Image)

$ 2,000.00

1926, 5c Dark Blue, Vertical Pair, One Without Ovpt., Other with Ovpt. Inverted (86g). Top st (Image)

$ 2,500.00

1926, 5c Dark Blue, Se-Tenant, "Canal" Only and "Canal Zone" (86h). Horizontal pair, left sta (Image)

$ 2,250.00

1926, 17c Black, Se-Tenant, "Zone" Only and "Zone Canal" (91a, 91c). Vertical pair with selva (Image)

$ 1,275.00

1926, 17c Black, "Canal" Only (91b). Selvage at top, minor h.r. with naturally short gum at t (Image)

$ 2,000.00

1928, 50c Lilac, Ty. "B" Ovpt. (94). Tied by Balboa Heights Apr. 17, 1929 wavy-line machine c (Image)

$ 500.00

1926, $1.00 Violet Brown, Ty. "B" Ovpt. (95). Tied by Balboa Heights May 7, 1926 circular dat (Image)

$ 1,000.00

1926, 2c Carmine, Pair, One Without Ovpt. (97a). Left selvage horizontal pair, left stamp mis (Image)

$ 2,750.00

1931, 3c Violet, Booklet Pane of Six, Handmade Perf Margins (102a). Unexploded booklet of two (Image)

$ 13,000.00

1933, 14c Dark Blue, "Zone Canal" (116a). Slightly toned original gum, rich color, Fine, only (Image)

$ 1,500.00

1924-31, Important Study Collection of United States Overprinted Issues (70-104). Mounted and

E. $ 2,000-3,000

1939, 1c-50c 25th Anniversary Commemoratives and Air Posts, "Amostra" and "Specimen" Overprints ( (Image)

E. $ 300-400

1928-1978, Study Collection of Modern Issues. Mounted and fully-annotated collection on pages

E. $ 500-750