Poland. 10 Zlotych, 1820-IB. Bitkin 1st ed, 798; Dav-248; Cr-101. Only 534 pieces struck. Alexander I of Russia. Bare head right. Reverse: Crowned double headed eagle. Rare. NGC graded EF-40. Estimated Value $5,000 – 5,500. Categories: World Crowns & Minors