Study authors explained that stamp seals were used on clay for administrative ... the idea has surfaced or resurfaced with a ...

According to the researchers, several symbols engraved on stone "cylinder seals" were developed into signs used in "proto-cuneiform," an early version of the cuneiform script used in southern ...

Inside it would have been the official mark (seal) of the sender and this would have been attached to a letter, much like a stamp ... of social status and the symbols of power, which is why ...