It's Ptolemaic, so Zeus on obverse, eagle on reverse.
Others can surely tell you more.
These typically have these casting sprues but as i understand it the coins are struck on cast flans.
Andreas
Looks late
Ptolemaic, some details off the coin so the
mint could be Cypriot (usually if it has a lotus flower to the left of the
eagle) or
Alexandria. Can't tell for sure on this and it's possible some lotus-flower issues were struck in
Alexandria anyway. A useful hint is that this coin has the word (PTOL)EMAIOY to the left of the
eagle 
Most all bronze coins of the time are struck onto flans that were
cast and broken away from sprues. Especially on smaller coins the visible evidence of the casting sprues is quite typical. Most of the
Ptolemaic bronzes also show the little dimples that come from a surface-smoothing operation to prepare the
cast flans for a clean strike. Small coins like these are frequently off-center on one or both sides so it isn't always possible to nail them down with certainty. And with
Ptolemaic bronzes, specifying the ruler (particular with these apparently later issues) is difficult at best. Late 2nd C. BC to early 1st C. BC is as narrow as I'd feel comfortable dating it, esp. since some design details may not be visible on this coin.
I think there is indeed one of these on
www.ptolemybronze.com in the
PtolemAE Collection area.
PtolemAE
