Tricolor silk square "Manifesto of the 363 Republican Deputies". Under glass. Wood frame. 40 x 40 cm A.B.E. Third Republic. The Manifesto of the 363 is a declaration addressed on May 18, 1877 by Republican deputies to the President of the Republic, Patrice de Mac Mahon, expressing their opposition to his policies and to the establishment of the monarchist Duc de Broglie as President of the Council, even though the majority of the Chamber was Republican.