CHILE. 500 Pesos, 1968-So. Santiago Mint. NGC PROOF-68 Ultra Cameo. Fr-57; KM-187. AGW: 2.9429. Struck to commemorate the 150th anniversary of the national flag. Possessing extreme frost on the designs and stunning mirror-like depth in the fields, this example is tied with one other for the finest certified of this highly demanded mid-century issue.