"Till the reign of Charles the Second our coin had been struck by a process as old as the thirteenth century. Edward the First had invited hither skilful artists from Florence, which, in his time, was to London what London, in the time of William the Third, was to Moscow.
During many generations, the instruments which were then introduced into our mint continued to be employed with little alteration. The metal was divided with shears, and afterwards shaped and stamped by the hammer. In these operations much was left to the hand and eye of the workman. It necessarily happened that some pieces contained a little more and some a little less than the just quantity of silver; few pieces were exactly round; and the rims were not marked. It was therefore in the course of years discovered that to clip the coin was one of the easiest and most profitable kinds of fraud.
In the reign of Elizabeth it had been thought necessary to enact that the clipper should be, as the coiner had long been, liable to the penalties of high treason. The practice of paring down money, however, was far too lucrative to be so checked; and, about the time of the Restoration, people began to observe that a large proportion of the crowns, halfcrowns and shillings which were passing from hand to hand had undergone some slight mutilation.
Meanwhile the shears of the clippers were constantly at work. The comers too multiplied and prospered; for the worse the current money became the more easily it was imitated. During more than thirty years this evil had gone on increasing. At first it had been disregarded; but it had at length become an insupportable curse to the country.
It was to no purpose that the rigorous laws against coining and clipping were rigorously executed. At every session that was held at the Old Bailey terrible examples were made. Hurdles, with four, five, six wretches convicted of counterfeiting or mutilating the money of the realm, were dragged month after month up Holborn Hill. On one morning seven men were hanged and a woman burned for clipping; But all was vain.
The gains were such as to lawless spirits seemed more than proportioned to the risks. Some clippers were said to have made great fortunes. One in particular offered six thousand pounds for a pardon. His bribe was indeed rejected; but the fame of his riches did much to counteract the effect which the spectacle of his death was designed to produce.
The evil proceeded with constantly accelerating velocity. [...] The officers of the Exchequer weighed fifty-seven thousand two hundred pounds of hammered money which had recently been paid in. The weight ought to have been above two hundred and twenty thousand ounces. It proved to be under one hundred and fourteen thousand ounces.
There were, indeed, some northern districts into which the clipped money had only begun to find its way. An honest Quaker, who lived in one of these districts, recorded, in some notes which are still extant, the amazement with which, when he travelled southward, shopkeepers and innkeepers stared at the broad and heavy halfcrowns with which he paid his way. They asked whence he came, and where such money was to be found."
(From The History of England by Thomas Babington Macaulay, Chapter 21.)