Lot 40220 – 1877, 20r violet and deep violet, two horizontal blocks of eight unused

1877, 20r violet and deep violet, two horizontal blocks of eight in contrasting shades, the commoner-shade multiple without gum showing sheet margin at top with complete ABN imprint in English, reinforcement in vertical central perforation, the other with full original gum and just one hinge supporting perforation; Comelli only recorded three blocks of eight, and the marginal one included in this lot was not listed; ex Dr. de Amaral Machado.