Lot 40058 – 1866, 50r blue, “crashed plate”, group of four different examples

1866, 50r blue, “crashed plate”, group including four of the five positions featuring this plate variety, including pos. 51, 71, 81 and 91, located in the first vertical strip of the lower half sheet, with the full sheet containing 100 positions; pos. 61 missing where the variety is not so clearly seen, but including pos. 91 which exhibits the line vertically crossing the portrait of Dom Pedro, all four stamps used and with no unused example known; a very rare and difficult assembly; certs. Fevereiro (2021-22, one for each individual item).