Arados started producing Posthumous issues of Alexander III with palm tree and AP monogram in 245/244 B.C (year 15/16) and discontinued the series after sporadic minting in 165 B.C (year 94). The Aradian era date can be found in exerque under Zeus´s throne, only on the first minted coin of this series has the era date been omitted.
The era date on my coin can be read from right to left as follows, …. … – or 1111 111 10 (17 – 243/42 B.C).
Please follow provided link for the coins attribution.