Very rare, first vintage minting of the highest denomination coins of the Kingdom of Poland.
Type minted between 1817 and 1819, characterized by the absence of a raised rim to protect the coin's relief, which was vulnerable to abrasion.
The present piece with well-preserved relief and luster.
Mintage of 17,194 pieces.
Gold, diameter 23 mm, weight 9.8 g.
Obverse: head of Alexander I to the right, in the rim:
ALEXANDER I - EMPEROR SA - W - ROS - KING OF POLAND *.
Reverse: Russian-Polish eagle, under the paws initials I.B. and date 1817; in the rim:
* 50 ZLOTYS - POLSK - 26 Z GRZ - CZ - KOL *.
