Alberto Estrada-Rius, corresponding academician of the Royal European Academy of Doctors-Barcelona 1914 (RAED) and responsible for Conservation of the Numismatic Cabinet of Catalonia, will coordinate the XXVII Seminar on Monetary History of the Kingdom of Aragon, which will take place between the next 9 and 11 May at the National Museum of Art of Catalonia on the Carolingian currency to the Hispanic Brand. Estrada-Rius will also participate in the sessions with the presentation “La monarquia carolíngia i la moneda” (The Carolingian monarchy and the currency).