Greek Coin - 2nd Century BC All Greek coins were hand-made, rather than milled as modern coins are. The design for the obverse was carved (in reverse) into a block of stone or iron. The design of the reverse was carved into another. The blank gold or silver disk, heated to make it soft, was then placed between these two blocks and the upper block struck hard with a hammer, "punching" the design onto both sides of the coin. This is a fairly crude technique and produces a high failure rate, so the high technical standards achieved by the best Greek coins - perfect centering of the image on the disk, even relief all over the coin, sharpness of edges - is a remarkable testament to Greek perfectionism