Cordoba, Argentina, 4 reales, 1847, encapsulated NGC AU 55. Janson-64; KM-24.3. 13.25 grams. Unflawed and with deep toning all over, hint of underlying luster, second finest known in NGC census. NGC #2713825-013. Acquired from Alberto "Coco" Derman in 1975. (Estimate: $200 - 300)