Possibly a reference to this gentleman smile

[Linked Image from photos.smugmug.com]

Vichy (Francia), 1953. Carlos Alfonso Mitjans Fitz James Stuart, XXII Conde de Teba, tras proclamarse campeón del mundo de tiro de pichón, con treinta y cuatro pájaros abatidos de treinta y cinco. Viste la chaqueta a la que dió nombre, la prenda española más internacional.

Vichy (France), 1953. Carlos Alfonso Mitjans Fitz James Stuart, XXII Count of Teba, after proclaiming himself pigeon shooting world champion, with thirty-four birds out of thirty-five shot down. He wears the jacket to which he gave his name, the most international Spanish garment.

The Teba jacket
https://thechap.co.uk/2019/12/03/the-teba-jacket/
https://lastofengland.co.uk/the-story-of-the-teba/
http://tweedlandthegentlemansclub.blogspot.com/2014/05/teba-jacket-legendary-sporthunting.html

[Linked Image from photos.smugmug.com]

Should be interesting reading. Born 1907 in Toledo and died 1997 in Madrid - quite a life!
https://openlibrary.org/books/OL13520368M/Bunting_El_Conde_de_Teba_Memorias_de_una_Leyenda.