CorreosChile’s 31 Minutos issue comprises ten designs released on 22 August 2026. The official artwork presents the programme’s logo and characters against bright yellow backgrounds, including Tulio Triviño, Juan Carlos Bodoque, Guaripolo, Juanín, Calcetín con Rombos Man, Patana, Mario Hugo, Policarpo and Huachimingo. Each illustrated stamp bears a $500 denomination.

The postal operator lists a $5,000 value for the ten-stamp series, a print quantity of 125,000, dimensions of 30 × 48 mm and offset printing. Mauricio Navarro of Aplaplac is credited with the design.

The collection was launched at the postal operator’s central headquarters on 22 August, according to TVN’s same-day report. The public activities included karaoke featuring songs from the children’s programme and a postcard-writing area. Postcards accompanied the stamp collection.

CorreosChile describes the issue as an effort to introduce children and young people to philately through the programme’s characters and cultural identity.