Yes, it is an interesting mistake. I have not come across one and doubt that I will, but you never know.
On the forums of the Finn auction site, someone found one and posted about it in late February asking whether it was real. Many at first doubted its authenticity, until the finder posted a picture. Eventually it became news in the papers here and now the Mint of Finland has finally publicized the info themselves. Here is a link to the picture that the original finder posted.
http://riemun.huuto.net/auctionimages/b/c0...2f45fd-orig.jpg(The picture is set up this way on purpose as one of the members on the boards suggested that the picture be taken this way to examine the alignment and such of the coin.)
