GB 1929 SG435var Booklet pane imperforate tête-bêche Imprimaturs
Stock Code: P08912220X
1929 1d Scarlet "Postal Union Congress". The superb unmounted o.g. imperforate tête-bêche pair of booklet panes from the Post Office registration sheet with "NPM IMPRIMATUR" handstamp on reverse. Rare.
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