This coin was attributed by the seller as being a hexachalkon of Azes II, with a weight of 13.5 grams, and no further information provided.
Not having much (well, no) familiarity with this sort of coin, I did some browsing, and found two coins kind of close.
One is listed as an AE tetradrachm of Azes I, referring to Whitehead 264 and Senior 102.
The other is listed as an AE hexachalkon of Azes II, referring to Senior 102.131 and Mitchiner 850l.
Further confusing me is that from what I have read, there may not have even been an Azes II in the first place!

The coin's Greek legend on one side seems fairly intact, and you can definitely see AZOY at the end, which matches with the description of the Greek legend BAΣIΛEΩΣ BAΣIΛEΩN MEΓAΛOY AZOY.
On the Greek side there is definitely a letter in the right field, and a symbol in a box above the bull; there is a monogram on the Kharosthi side; but I cannot match them conclusively to what I have been able to find while browsing; therefore, if someone can nail this down to a positive attribution it would be greatly appreciated!


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