1925, 10c Orange (87).
Mint N.H. right plate no. block of six (gum barely tropicalized at bottom),
vibrant color, choice centering, Extremely Fine
(Image)
1925, 10c Orange, "Zone Zone"
(87a). Position 18 in pane of 100 from Plate 16378, slightly
tropicalized original gum, brilliant color, choice centering, Position 79
minor imperfection, choice centeringVERY FINE. ONLY FIVE COPIES OF THE "ZONE ZONE" ERROR ARE RECORDED FOR THE 10-CENT VALUE.
According to Canal Zone Stamps, the error only occurrs on Position 18 of the bottom right pane. All were officially destroyed, except for five copies. Two of the five are contained in complete panes. The other pane is plate no. 16379.
Signed I. Koslow in pencil at bottom right. Scott Retail as the error, two plate blocks, nineteen blocks of four and six singles. (Image)
1928, 12c Brown Violet
(88). Right plate no. 15352 block of six, slightly tropicalized
original gum, deep rich color, choice centering, Very Fine (Image)
1926, 12c Brown Violet, "Zone
Zone" Ovpt. (88a). Position 18 in right margin block of twelve,
slightly tropicalized original gum, h.r., deep rich color, choice
centeringVERY FINE AND CHOICE. ONE OF THE FINEST OF THE FOUR KNOWN EXAMPLES OF THIS VARIETY.
According to Canal Zone Stamps, this error comes only from Position 18 on the lower right pane of the plate. Four panes were sold before the remaining 246 lower right panes on hand were officially destroyed, on Oct. 15, 1926. One pane is still intact (ex Tows and Grebian).
Ex Plass. Illustrated in Canal Zone Stamps on p. 153 (detail). With 1967 P.F. certificate. (Image)