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 1967 2 1/2np Commelina Flower. Right marginal horizontal pair, second stamp MAJOR ERROR 'Red (country name & value) Omitted', adjoining stamp partially so. The error was caused by a paper fold during the printing process, perfectly illustrated in this piece. Pierron states just 3 copies exist with complete omission, this being the solitary surviving pair showing the variety. A major rarity. SG463ab