Marble relief (Block XLVII) from the North frieze of the Parthenon. The frieze shows the procession of the Panathenaic festival, the commemoration of the birthday of the goddess Athena.
https://research.britishmuseum.org/research/collection_online/collection_object_details.aspx?objectId=461666&partId=1
Marble relief (Block I) from the West frieze of the Parthenon. The frieze shows the procession of the Panathenaic festival, the commemoration of the birthday of the goddess Athena.
https://research.britishmuseum.org/research/collection_online/collection_object_details.aspx?objectId=3149000&page=1&partId=1&searchText=Horsemen%20from%20the%20west%20frieze%20of%20the%20Parthenon