Watch List notes:

Köln, Klemens August Herzog von Bayern, quarter-mining taler, 1759, Bonn or Koblenz, made from Westphalian fine silver on the resumption of the Ramsbeck mines, arms of the Archbishop, rev., inscription above mining scene, 5.40g (Noss 765), virtually as struck, very rare, in NGC holder graded MS64

Estimate: 1000-1500 GBP