The Ptolemaic copper coinage is on two bases -- the uten, binarily divided, and the Ptolemaic five shekels (1050), also binarily divided.
The 80-grain system, as we have seen, was probably formed by binarily dividing the 10 shekels, or "stone"; and it had a talent (Abydus lion) of 5000 drachmae; this is practically identical with the talent of 6000 Attic drachmae.
The uten was also binarily divided into 128 peks of gold in Ethiopia; this may refer to another standard (see 129) (33).