I found this over at QBN yesterday. Apparently it was a competition to design new bank notes, as described on the Swiss National Bank web site:
As part of the planning process for the development of a new banknote series, a competition for the artistic design of the new banknote series was launched at the beginning of 2005. Twelve artists were invited to present their designs for all six denominations on the theme “Switzerland open to the world”. The jury met in November 2005 to evaluate the submissions and to decide on the winning designs. These were presented at a news conference in Berne on 23 November 2005. You can view them by clicking on the names of the individual designers.
Here are a few examples of the winning entries:
Some of then are very strange, such as this entry that looks like it was made with Microsoft Paint.
All results can be found here.