20 centimes bleu fonce tęte-bęche
position 110, in original gum block of six, plate 1, positions
ex Burrus and King Farouk
Ceres #T8a, Yvert #8d
Census of unused in dark blue shade:
this is the only block in this shade
The twenty centimes blue was to have replaced the twenty centimes black but was not issued. A total of 23.3 million were printed from five plates, including the first plate used for the black stamps, which contained tęte-bęche clichés at positions 92, 110 and 148. Although about 100 thousand of the error pairs were printed, virtually all were destroyed by the Post Office in July, 1851. Examples survive in all three of the major shades (blue on yellowish, blue on bluish and dark blue).