Domitian’s patron goddess was Minerva, the Roman goddess of wisdom and war. She quickly became the image on most of the reverses of Domitian’s coins. As seen above are the four most common types seen and are shown in the following order: M1, M2, M3, and, M4.
M1: Minerva is advancing, facing right, and wielding a spear.
M2: Minerva is advancing right, wielding a spear, standing on the capital of a rostral column, and accompanied by an owl.
M3: Minerva is standing, facing left, and is holding a spear and thunderbolt with a shield at her feet.
M4: Minerva is standing left and is holding a spear.