France
Aire. Marechal de Goesbriant Siege Klippe 50 Sols 1710 MS62 NGC, KM16.1. A highly interesting klippe featuring rich cabinet patina accented by muted pastel hues. Despite one area of weakness on an otherwise boldly-struck specimen, this is by far one of the most alluring examples of this elusive uniface seige coinage we've encountered.
Estimate: 1200-1700 USD