Poland, '4 Sided coin'

Among the latest coinage techniques is this one that requires you to observe the coin effects as you move it back and forth. This Millennium coin extraordinare changes date from 2000 to 2001 as you move it! Thus 3 photos to show the '4 sides' (the 4th side is the edge). Originally mintage figures were stated at 2000, unfortunately (for Moneta) the mintage has been increased to at least 200,000.