Definitive stamp perforated "OFICIAL" for use on external mail sent from government offices in Guatemala City. The date given here refers to the decree which necessitated these perfins, but in practice they were applied to stamps requisitioned from available stocks, so the actual issue date is approximate.
The perfin may exist upright, inverted, reversed and reversed inverted. Forged perfins may exist.
Footnoted in: Stamp Number, noted in 2009 but not in 2021.
