With higher level of the collection, the fewer canvases will be generated. Their number is indicated in Prospect section. The rarity of a canvas of a certain level will itself increase its value.

If, for example, two large (main) coins are randomly in their places, see Goal, then this will already make this canvas rare, and the phenomena can occur with any levels

Six large coins can also either be in their places, or all six pieces can fall out of one set. If both events occur at the same time, then they will make a canvas unique.