Chile republic volcano peso. NGC MS65. Finest of the entire volcano peso type graded. This is a very rare coin. Although mintage was 116,000, many were overstruck as Brazil 960 Reis. 1820 is hardly ever seen, and the next highest graded by NGC is VF. PCGS has graded one AU only. The most common date to appear is 1817 followed by 1822 and 1833. The high relief design, especially the clouds over the volcano resulted in die insufficency on both obverse and reverse at that point.