Ancient Coining.
The die for the obverse of the piece to be struck having been engraved, so as to properly present the religious or national symbol used for a device and whatever else was to be impressed upon the coin, was fixed immovably in an anvil or pedestal, face upwards. The lumps or balls of metal to be coined, having been made of a fixed and uniform weight and nearly of an oblate sphere in form, were grasped in a peculiarly constructed pair of tongs and laid upon the upturned die. A second operative then placed a punch squarely upon the ball of metal; heavy blows from a large hammer forced the punch down until the metal beneath it had been forced into every part of the die, and a good impress secured. In the meantime the punch would be imbedded in the lump of metal, and on being withdrawn the reverse of the coin would show a rough depression corresponding to the shape given the end of the punch, thereby making an uneven surface and disfiguring the piece; punch marks gradually developed into forms, and these forms combined with figures wrought into artistic design, until, by degrees, the punch itself became a die, making the reverse of each piece upon which it was used equal in every respect to the obverse of which it was the opposite. This perfection of the reverse was, however, secured at the expense of the effectiveness of the punch for its original purpose.
The striking of coin between two dies, which were required to accurately oppose each other, was an operation requiring great dexterity, and the results were not at all certain. The artisans at this stage of the work, hit upon the expedient of using both the obverse and reverse die in a ring of such a size and depth, as to be a guide to each of them. The balls or disks of metal being struck inside the ring, between the dies, were forced to assume an even thickness, and a circular form corresponding with the inside of the ring. After the ring had been used in this way for some time, it was engraved upon the inside, and the coins produced were not only circular in shape, but stamped upon their edges. Thus was produced the perfect coin, and through the introduction of machinery has secured uniformity in the result and saved an immense amount of labor in striking vast sums of money; the artistic beauty of some of the antique specimens has not been surpassed in modern times.