[P]rince [C]harles [C]hair
This chair was designed by Lord Snowdon for the investiture of Prince Charles on 1 July 1969. 4,600 of these chairs were made for seating guests inside Caernarfon Castle.
Carmarthen (/ k ɑːr ˈ m ɑːr ð ən /; Welsh: Caerfyrddin [kɑːɨrˈvərðɪn], "Merlin's fort" or "Sea-town fort") is a community and the county town of Carmarthenshire, Wales, lying on the River Tywi 8 miles (13 km) north of its estuary in Carmarthen Bay.
https://museum.wales/articles/2019-07-03/The-Prince-of-Wales-Investiture-chair/