The condition of the coins
The mistaken belief that "polished"is a state of coins . Actually , the coin is minted in a special process - polished stamp on the polished of the workpiece , hitting double-precision stamps for stocking coins . The special treatment of the working stamps is that after extruding them in the recesses with Queen stamps etched with acid to make the surface "roughness", and their end surfaces then polished "to the mirror". Special handling mint circles before the die is polished on both sides also "to mirror". And chiselled in two strikes achieved complete filling of all the internal cavities of the stamp a metal coin flan, resulting in a minted coin and acquires the final form : the matte surface of all the convex parts of the image , a mirror surface throughout the field of the coin, total lack neprocitana" image , pair of Kant with the field of the coin is strictly at a right angle, etc. usually has a mirror field and frosted relief .