10 euro Gold coin dedicated to the Emperor Costantino, PROOF.
Flavio Valerio Aurelio Costantino was a Roman emperor from the A.D. 306 on his death.
He is one of the most important figures of the Roman Empire that he largely reformed and in which he allowed and favored the spread of Christianity. Among his most significant interventions, the reorganization of the administration and the army, the creation of a new capital in the east, Constantinople, and the promulgation of the Edict of Milan on religious freedom.
The Orthodox Church and the Eastern Rite Churches venerate him as a saint, present in their liturgical calendar, with the title of Equal to the Apostles; while his name is not present in the Roman Martyrology, the official catalog of saints recognized by the Catholic Church.