This is a Byzantine coin, which was used as currency in the Eastern Roman Empire. The Byzantine currency consisted mainly of gold solidi and hyperpyra, as well as various bronze coins.
The gold solidus was introduced in the 4th century and remained a monetary standard for over a thousand years.
Byzantine coins often featured Christian themes, such as the cross, Christ, the Virgin, and various saints.
The Byzantine Empire had several mints, with the main one located in the capital, Constantino
