 Although only a small percentage of Greek burials contain coins, among these there are widespread examples of a single coin positioned in the mouth of a skull or with cremation remains.In cremation urns, the coin sometimes adheres to the jawbone of the skull.At Olynthus, 136 coins (mostly bronze, but some silver), were found with burials; in 1932, archaeologists reported that 20 graves had each contained four bronze coins, which they believed were intended for placement in the mouth.