Apollo, crudely dated by the Carlsberg Glyptotek to 30 BC-500 AD - I would guess narrow it down to 30 BC-235 AD.
Apollo from at temple at the Athenian Agora, 4th century AD, possibly a work by Euphranor.
You can be almost certain that you will find a statue of Apollo if you visit a museum of classical art or history - he is one of the gods that you'll keep running in to.
He's also easily recognized with his rather female forms and his lyre, an instrument that he almost always carry. There are however types that doesn't fit in to the norm, such as Apollo from Olympia, where we see him depicted in a stiff position, on top of the situation, as if he can't be seen by the fighting centaurs and Lapiths.
Apollo from Olympia (ca 460 BC).