Dominican Republic, proof silver piefort 100 pesos (off-metal strike), 1980, Enriquillo / pillar dollar reverse, NGC PF 69 Ultra Cameo, finest and only example in NGC census. cf KM-X3a. A fantasy coin issue denominated in "100 pesos oro") but struck in silver, bronze and aluminum as well, each 1 oz except for the pieforts like this one (mintage unknown), which is the first we have seen with the pillar dollar reverse, virtually flawless, no toning.
Estimate: 500 - 750 USD