Upon graduation Comín applied for entry into Cuerpo de Archiveros, Bibliotecarios y Arqueólogos, a state-controlled corporation entrusted with protection of national cultural heritage; following the nationwide contest process he emerged victorious as the 3rd best among 45 successful candidates nationwide and in 1915 was admitted to the corps [REF].
Some time during the last years of the Restoration Comín commenced working at Facultad de Filosofía y Letras at the Zaragoza University, where at that time his father was member of the academic Junta de Gobierno.