The Famous Dutch-Brazilian "Ducat"
Pernambuco. Geoctroyeede West-Indische Compagnie (GWC) gold Klippe 6 Guilders (Florins) 1646 MS63 NGC, KM6.3, Fr-2, LMB-O4. Lozenge after BRASIL, period after VI. A fairly horizontal strike on both the obverse and reverse, and crudely produced---as is the case for all of these corresponding issues. An important factor in their rarity is the fact that they were only legal tender in the colony and not in the mother country of Holland, where they had to be converted into Dutch Guilders (and where these "Brazilian Ducats" were commonly melted). Similarly, within the colony, Portuguese or Brazilians were also at risk if found to be carrying this rival currency, therefore, many were converted and melted as well.
MS63 is high-grade uncirculated.
Source: coins.ha.com