Pot metal is an all encompassing name for an inexpensive blend of low melting point metals such as white zinc, tin, copper and cadmium. In fact that is how it got its name - an assortment of metals thrown into a pot to melt. It is also sometimes referred to as monkey metal. It has the advantage of being quick and easy to cast and because of its low melting properties, didn't require specialized molds or highly sophisticated foundries. It can be identified by age pits, which are a natural occurrence caused by air bubbles that remain trapped during manufacture. It was used to make jewellery for the less well heeled classes and simply by a piece surviving over the decades, provides historical interest, even though these early pieces are not of the finest quality.