Base of a tomb-marker (cippus) found at Chius, Italy. Now in The British Museum, London.
Date: 490BC-470BC
https://www.britishmuseum.org/research/collection_online/collection_object_details.aspx?objectId=466785&partId=1
73 photos taken (through glass) in May 2019 with a Sony a6000 and processed in Agisoft Photoscan.