249 PESSOA, Fernando.- Mensagem.- Lisboa: Parceria António Maria Pereira, 1934.- 100, [2] p.; 18 cm.- B. First edition of a work that would have a great impact on 20th-century Portuguese literature, the only book published by the author, a year before his death. Copy signed by Fernando Pessoa on the flyleaf, very clean, probably one of the first to come off the press, retaining both paperback covers, with flaps and very slight wear.