Chile
Ferdinand VI gold 8 Escudos 1756/5 So-J AU Details (Chopmarked) NGC, Santiago mint, KM3, Onza-650, cf. Onza-1376 ("Few specimens known") for the punch mark. Well detailed with strong mint luster, mild high-point friction evidence and pleasant surface quality for the designation and a small four-beaded rosette stamp to the left of the bust. Rather than a chopmark, probably a private merchant's mark as attributed in the Onza reference work. Interesting and obviously rare.
Estimate: 2000-3000 USD