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Great Britain, Victoria (1839-1901)
1883. 9 d. green, very fine cancel
The 1/2 P. denomination and the "lilac" and "green" denominations were issued in 1883 and 1884. They were also printed on paper with WMK 30 -- the Imperial Crown watermark.
To prevent the soaking and re-use of un-canceled stamps, the lilac and green denominations of this series were printed using "fugitive inks". When these stamps are improperly soaked, the inks used to print them, either run or change color.
Referência : Stanley Gibbons 194
Fonte : https://www.stamp-collecting-world.com/b...
Coleção : XXVII Stamps