This sculpture of Athena was carved out of marble in the 1st century AD/BC in Rome. It was a copy of an earlier Greek sculpture from the 4th century BC.
Of all Athena’s iconography, her helmet might be the most widely recognized, but she has other icons that you can use to identify her. If you look closely you can also see snakes on her tunic, and a big Gorgon on her brooch. These are dead giveaways you’re looking at Athena.
Homer characterizes her as the god of battle strategy and wisdom.