File:Taylor-Prism-2.jpg

Summary
Photo by the British Museum and authorized under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) license.

https://www.britishmuseum.org/research/collection_online/collection_object_details.aspx?objectId=295077&partId=1&images=true

https://www.britishmuseum.org/join_in/using_digital_images/using_digital_images.aspx?asset_id=32573001&objectId=295077&partId=1