The World On V-Stand 3D is a quality 540 piece jigsaw puzzle from Ravensburger and has easyclick technology. nbsp;Every piece is numbered on the back to help you complete the ball and display it on the enclosed stand for all to admire. The clever V-stand allows the completed puzzleball to rotate on an axle, similar to that of the earth. The puzzleball can also be taken apart to complete again another day. This updated 540 piece puzzleball has a magnificent illustration of the world. « less