Topological Toy from Germany

Tim is very fond of topological toys, i.e. toys that have the property of changing their shape. This rare topological toy comes from Germany, and is made from sheet metal. It is a bit like the four sides of a square, except that two extra sides have been added! The toy can be made to flex into a number of unusual shapes, one of which is a coronet or small crown, which as well as being very beautiful, is also handy for storage purposes, since it takes up the least space in this configuration.