Lot 40286 – 1878, 700r brown red, imperforate plate proofs on India

1878, 700r brown red, imperforate plate proofs on India paper without gum, the sensational block of 24 (6×4) from the top right corner of the sheet, exhibiting the two ABN marginal imprints, natural diagonal paper fold and slight vertical crease only affecting three stamps not detracting, a most rare multiple of this stamp; this design is very rarely seen in large multiples as the issued stamp has only two blocks larger than a block of four, which contain 10 and 18 units; ex Dr. de Amaral Machado.