2025
year

ČNB
issuer

31 mm
diameter

2,2 mm
thickness

0,418 troy oz (13,00 g) Ag
weight

92,5% Ag
purity

PROOF
grade

9600 piece
mintage cap

200 CZK
nominal value

Orders containing this coin will be shipped on 20.10.25, after stocking from the CNB.

The bicrown is minted from an alloy containing 925 parts silver and 75 parts copper and is issued in two versions, the standard STANDARD and the top PROOF, which differ in surface finish and edge design.

In the PROOF quality coins, the field of the coin is highly polished and the relief is matt, the edge is smooth with the frieze "CZECH NATIONAL BANK * Ag 0.925 * 13 g *".

The learned priest Cosmas, who lived at the turn of the 11th and 12th centuries, became famous as the first Czech historian – the first known Czech chronicler. He called his famous work, which laid the foundations of Czech historiography, Chronica Boemorum, or Chronicle of the Bohemians, or Czech Chronicle. Without the stories he recorded, which are both instructive and entertaining, we would not have a comprehensive picture of older Czech history today. After Kosmas breathed his last in 1125, he became an inspiration for many successors.

The reverse side features a stylised image of Spytihněv's basilica, which stood on the site of today's St. Vitus Cathedral. There is also a Latin inscription, COSMAS DECANUS, meaning Dean Kosmas, accompanied by a decorative initial C.

The obverse side is dominated by a depiction of the writing canon incorporated into the silhouette of a face and surrounded by fragments of period architecture.

The PROOF coin is stored in an etui. Each coin is accompanied by a catalogue card with a description of the coin and its plastic representation.