A beautiful, circular example of a well-liked issue.
The coin is definitely rare in this state of preservation.
Obverse: the ruler's head to the left, below it the mint mark F, in the rim the legend:
FRIEDRICH AUGUST V.G.KOENIG V. SACHSEN;
Reverse: a crowned and order-bound shield of arms, in the rim legend:
2 THALER VII EINE F. MARK 3 1/2 GULDEN VEREINS 1850 MUNZE;