Today is the last day that the 50 Kč banknote can be used to pay for goods and services. As of April 1st, only the 50 Kč coin can be used. Fifty Czech Crowns = $2.88.
The banknote is being removed from circulation due to costs. A banknote has to be replaced every few years but a coin lasts much longer.
Consumers can trade in their 50 Kč banknotes at banks until March 31, 2012. Luckily, I kept a banknote as a souvenir. I've preferred the banknote to the coin. I always felt like I had more money when I had the banknotes in my wallet.