(translated from Catalan)

“This is a present from my sister
Nun Rafaela

Red Cross Hospital,
23st June 1970
The day my wife underwent surgery”

Found by Xavier Caballé in Barcelona (Catalonia, Spain) who says:

“This inscription comes from a book I brought some weeks ago at a book fair.
The book is a biography of James I of Aragon and Catalonia, a medieval king.”