Peru, 1/2 peso-sized silver medal, 1828, congressional approval of Constitution, encapsulated NGC MS 62, finest and only specimen in NGC census. Fonrobert-9028. 27.5mm; 9.68 grams. Obverse with open-book Constitution within rays, legend SANCIONADA POR EL CONGRESO JRAL DEL PERU; reverse with PROMULGA- / DA Y JURADA / EN 6.DE ABRL. / DE. 1828. Superb, with almost prooflike luster. NGC certification number 4431156014. ($200-300)