It is commonly referred to as ‘contorniatos’ a certain kind of pseudo-monetary medallions produced in Rome during the IV and V centuries AD of the similar size to a sestertius. The name "contorniato" is a modern designation numismatic studies are already in the sixteenth century and comes from the Italian word "contour". With this term refers to the grafila, i.e. the thin sunken line marks the edge of the front and back and which is the main feature of Contorniatos.
The second feature is that almost all blanks contorniatos have slightly raised edges, hammering effect was obtained Flan singing. The grafila is generally recorded on the inner side of that edge. Clearly, this incision is performed once the piece had been coined as in some cases it can be seen that the letters short legends. The bill distinguishes the contorniatos finally also by the limited visibility of their motives and the thinness of the tokens used.
Besides this peculiar formatting, contorniatos share many other unique attributes. They are typically of brass, although some are also conserved brass and other alloys. The vast majority was coined similarly to the coins of the time, but copies are known cast and others who have been directly recorded in the flan. All share represented motifs finally bill similar style somewhat awkward, spelling errors abound in their legends. It is also common, find monograms etched on their faces.
Since most of our readers are interested in collecting the coins, here we share a great resource of fading the best US coin proof set price online at http://www.americancointreasures.com.
The reasons are varied represented and there seems to be a clear connection between the front and back, at least not one recognizable today. However, the great common denominator are representations linked to the great Roman games, especially chariot races in the Circus Maximus and theatrical themes.
The scientists have made the most different explanations about what its role has been in the history.