The obverse looks familiar to me, and the coin is yellowish. I abstain to post the reverse for the moment because it's still unclear. Please try to guess the name on the obverse, otherwise I can't sleep tonight. The coin weighs 8.52 g.
Most probably I am wrong, but it looks like Augustus (needless to say, I just love Augustus coins and I see Augustus everywhere minted in Seleucis ad Pieria, Antiochia ad Orontem, 3 - 2 BC, RPC I 4258 or RPC I 4251 like this one: 20 x 21 mm, 8.16 g;
Why do you not post the reverse? It is key to identifying this coin. My wild guess is that it is a modern tourist fake of a shekel of Tyre. The reverse would indicate that.
The reverse is very worn. There are 3 lines within a wreath of leaves. The legend is Greek. One line reads MH.. The second line reads Pi O N or M.. Philip II was father of Alexander the Great . Philip I is older. The coin could date back to the fifth century BC. Thanks anyway. I'm satisfied.
Finally, and merely by coincidence, I found the result. The bust on obverse represents Melkart, the Tyrian god of war. The coin is a civic issue from Tyre -Phoenicia. Denomination is dichalkous. Reverse reads in Greek on 2 lines : Metro Polis. A third line might read Tyros. Babelon 2153.