Czech Republic Fifty Crowns 1993

Bimetallic coins have become popular in many countries during the past few years, predominantly used for a country's highest denomination coin. The Czech Republic struch large numbers of these for circulation in 1993, but there was a wide public preference for the 50 Korun (Crown) note, so the coin was seldon encountered in general circulation. This seems to have changed during the past couple of years, perhaps due to the central bank ceasing to issue the paper fifty, although I have no real evidence of this. There have been several attempts to introduce a dollar coin into circulation in the United States, but the general public prefer to use the paper version. I can't understand why the US government simply ceases the issue of one dollar notes, as occured in many countries including the UK, Australia, Taiwan, New Zealand and I'm sure many others.........