Correos de Guatemala and the Asociación Filatélica de Guatemala marked the opening of Expofilgua with the unveiling and first application of its official cancellation on a commemorative cover. Postal director Chrystian Monterroso and association president Carlos Rivera participated.

The exhibition’s photographed display gives the dates as 18–26 September 2026. It was held at the Museo Postal in Guatemala City’s Palacio de Correos. The postal administration’s report was published on 21 September.