DECEMBER 15, 2025 — The city of Sastre, the administrative centre of the San Martín department in Argentina’s Santa Fe province, has formally adopted a new official flag following a public design competition, reports El Litoral.
The winning flag was created by designers Mateo Grosso and Matías Allasia. The announcement and proclamation of the winning design took place at the Plaza Independencia on December 13, timed to coincide with the commemoration of the 139th anniversary of the city’s official layout by the Santa Fe government.
The search for a new civic symbol was conducted through the contest “La Bandera de mi ciudad” (“The Flag of my city”) earlier in the year. The competition gathered ten proposals from the community, with submissions closing on November 28. A jury selected the winning design on December 3 after a period of evaluation.
The selected flag features three horizontal stripes of blue, white, and green, alongside a central design incorporating elements significant to the city’s identity.
The colours are officially assigned specific meanings: blue represents “justice, loyalty, and perseverance”; white signifies “purity, integration, goodness, and peace”; and green is cited as standing for “nature, hope, abundance, and courtesy.”
The central iconography includes a wheat head, which is stated to represent the region’s agricultural production, deemed the cultural and economic foundation of Sastre. Further elements include a depiction of the historic Flagpole of Plaza Independencia and the antifaz, or mask, associated with the city’s celebrated provincial carnival festivities.
For their winning contribution to the city’s civic patrimony, the designers, Mateo Grosso and Matías Allasia, received a monetary prize of 500,000 Argentine pesos.
Image: El Litoral
