Reliefs depicting the Roman god Mithras (based on the Proto-Indo-Iranian god Mithra and the Vedic god Mitra) killing a bull in the Tauroctony, with Sol and Luna watching—first image photographed in unknown location, second image photographed in Musei Vaticani, Rome (unknown artists/sculptors, 1st to 7th century CE, photographed in the early 21st century).
(via Wikimedia Commons & Core Spirit)