unused Block of Four  10c. orange-vermilion mint block of four [49-50/57-58] with practically full original gum. Very fine and scarce. Signed E. Diena and G. Oliva. S. 17, L.8,250,000. Photo
unused Block of Four 10c. orange-vermilion mint block of four [49-50/57-58] with practically full original gum. Very fine and scarce. Signed E. Diena and G. Oliva. S. 17, L.8,250,000. Photo

Details
unused Block of Four 10c. orange-vermilion mint block of four [49-50/57-58] with practically full original gum. Very fine and scarce. Signed E. Diena and G. Oliva. S. 17, L.8,250,000. Photo