Alexander's gold coinage, indeed (possibly not struck till after the invasion of Asia), follows in weight that of Philip's staters; but he seems at once to have adopted for his silver coins (of a smaller denomination than the tetradrachm) the Euboic-Attic standard, instead of the Phoenician, which had been Philip's.
One remarkable tetradrachm with the Sabaean legend Abyath'a is imitated from an Alexander of the 2nd century B.C., the execution being quite artistic and the weight Attic. There are also coins struck at Raydan and Harib, which must be assigned to the Himyarite period (1st and 2nd century A.D.).
Of weights there are scarce any dated, excepting coins, which nearly all decrease; the Attic tetradrachm, however, increased in three centuries (28), owing probably to its being below the average trade weight to begin with.
Alexander's campaigns drew Persia into the Hellenistic world of silver-based coinage and a system was founded on the silver drachm and tetradrachm.