Czech currency rates
Kurzy.cz/czk.cz is the first place where you can get information about Czech currency rates. The page has only Czech version, but it has a lot of information about Czech currency rates - complette history, current rates, best rates in Czech banks and Exchange offices (USD EUR). You can use Google to translate the Currency rates page.
Czech currency - EUR and USD chart
Czech koruna - banknotes
The complette list of Czech banknotes and coins is on official page of the Czech national bank (ČNB).
Other pages about Czech koruna
Old Czech banknotes from 20 century
Czech koruna Czech currency on Wikipedia
Czech currency on Yahoo