Guatemala, Banco Colombiano 1900 P-S121b PMG Gem UNC 66 EPQ 1 Peso
A rare type from Guatemala, issued by the Banco Colombiana, which was actually established in Guatemala (and not Colombia, as the name implies). This type is seldom offered for sale and this example is tied in the PMG population report with just one other example as the finest graded for the type.
PMG Population in 66 EPQ: 2 (0 Finer)