The first silver coin of the Czech National Bank with a nominal value of 200 CZK struck in top quality proof, which will be released in 2021, is dedicated to Jan Janský.

Jan Janský was a leading psychiatrist and neurologist, but his immortality was secured by a completely different medical field. When saving a patient who had attempted suicide, he successfully performed a blood transfusion that was then - in the early 20th century - forbidden. Since then, he has been trying to find out why the same intervention did not help other people. Then, as part of his research to find the relationship between blood and mental illness, he came to the groundbreaking discovery of the four blood types. Unfortunately, the true significance of his discovery remained hidden. He did not pursue transfusiology, and his discovery was not put into practice until his successors...

In the art competition of the Czech National Bank, the joint design of two medal makers - Asamat Baltaev, DiS., and Jiří Hanuš, DiS. The expert committee appreciated in particular "the contemporary marking of the blood groups (0, A, B and AB) on the obverse side and the successful composition of the portrait and the inscription in the form of the Roman numeral IV on the reverse side".

All Czech coins - both commemorative and circulation - are minted by the Czech Mint in Jablonec nad Nisou.