Unless this trans-substantiation takes place, the ton of iron not only ceases to be a commodity, but even a product, for it is a commodity only because it is a non-use-value to its owner; that is to say, his labor counts as actual labor only in so far as it is labor useful to others, and the thing is useful to him only as abstract universal labor. It is, therefore, the business of iron, or of its owner, to find that point in the world of commodities where iron attracts gold. But this difficulty, the salto mortale of the commodity, is overcome when the sale actually takes place, as is assumed here on the analysis of simple circulation. When the ton of iron is realized as a use-value through its alienation, i. e., by passing from the hands in which it is a non-use-value to hands in which it is a use-value, it at the same time realizes its price and from mere imaginary gold it becomes real gold. In place of the name one ounce of gold or £3 17s. 10-1/2d., an ounce of real gold has appeared, but the ton of iron has cleared that place. Not only does the commodity—which in its price had been ideally converted into gold—actually turn into gold through the sale C—M, but gold, which as a measure of value had been only ideal money and in fact figured merely as a money name of commodities—is now turned into actual money66 by the same process. Just as gold became the ideal universal equivalent, because all commodities measured their values by it, so does it now become the absolutely alienable commodity, real money, because it is the product of the universal alienation of commodities for it—and the sale C—M is the process by means of which that universal alienation takes place. But gold becomes real money only through sale, because the exchange values of commodities were already ideal gold in
In the sale C—M, as well as in the purchase M—C, two commodities, entities of exchange value and use-value, confront each other, but the exchange value of the commodity exists only ideally as price; while as regards gold, although it is really a use-value, its use-value is confined only to its being the