Firma del filósofo italiano Antonio Gramsci.
https://www.iberlibro.com/servlet/BookDetailsPL?bi=30748693831&amp;cm_sp=snippet-_-srp1-_-tile5&amp;searchurl=an%3Dantonio%2Bgramsci%26ds%3D10%26sortby%3D17%26tn%3Dvita%2Blettere
Antonio Gramsci