Note: Do not rely on this information. It is very old.
Dutch Metal
Dutch Metal is an alloy of copper and zinc, containing about three parts of the former to one of the latter. It has a yellow colour, and is very malleable, so that it may be obtained in thin leaves resembling, and often used instead of, gold leaf. It may be readily distinguished from the latter by its solubility in acids, and by the greater ease with which it tarnishes.