A method and apparatus including the steps of establishing a defining attributes of a respective coin based at least upon a predetermined ratio of weight per unit of volume or upon topological features of one or more predominant surfaces of the coin, measuring a first set of dimensional parameters that define a shape of the disk including one or more thickness and diameter measurements, measuring a second parameter including a weight of the disk, measuring a third set of parameters defining a set of topographical features of the disk, comparing the measured parameters within at least some of the plurality of files of the database; and classifying the disk as a specific type of coin by substantially matching at least some of the measured parameters of the disk with the attributes of at least one of the plurality of files.