150 Guaraníes José Félix Estigarribia

Estigarribia commanded Paraguayan forces to victory in the Chaco War (1932–1935), one of the bloodiest conflicts in 20th-century South American history, fought against Bolivia over a largely waterless territory both countries believed held oil. He died in a plane crash in 1940, just months into his presidency, before his authoritarian constitution could be fully implemented. This coin was struck nearly three decades after his death, part of a broader Paraguayan commemorative program in the early 1970s that leveraged foreign silver striking contracts to generate hard currency.