This commemorative 1 Peso stamp was issued by Paraguay in 1937 to mark the 400th anniversary of the founding of Asunción (1537–1937). The design features the national coat of arms in green at the center, framed by an ornate brown border. The inscriptions highlight the occasion, reading “Fundación de Asunción” along with the dual dates. A fine piece of Paraguayan philatelic history, it represents an important celebration of the nation’s capital city. This issue is highly collectible for its historical theme and bold classical design.