FEDERAL TERRITORY ISSUE. SG K5a. 1979 (30 April).
15c Multicoloured. 'Vertical Pair, Top Stamp Imperforate'.
Brilliant fresh Unmounted full top corrner sheet marginal mint block of fifteen (3 x 5). Top three stamps all being imperforate. Also shows double perforations between 2nd and 3rd rows.
Extremely Rare. This Block Contains 3 Of The Only 10 Imperforate Stamps Possible From The Unique Sheet.