What is the papal banner?

The papal banner, also known as the flag of the Holy See, features the crossed keys of Saint Peter and the Papal Tiara. The keys, one gold and one silver, symbolize the keys to Heaven given to Saint Peter, representing the Pope's authority. The background is typically white and yellow, reflecting the colors of the Vatican City. This banner is used during official ceremonies, papal events, and represents the Pope's sovereignty and the Catholic Church's mission.