On September 29, 2009, The Bank of Mexico unveiled a set of commemorative banknotes. The 100-peso denomination note commemorates the centennial of the Beginning of the Mexican Revolution (1910–1920). The 200-peso denomination note commemorates the bicentennial of the start of the Mexican War for Independence which began in 1810. There was a printing error in the $100 notes, in the small letters (almost unnoticeable, as they are very small and the same color as the waving lines), near the top right corner, just above the transparent corn, from the side of the "La Revolución contra la dictadura Porfiriana", it is written: "Sufragio electivo y no reelección" (Elective suffrage and no reelection), this supposed to be a quote to Francisco I. Madero's famous phrase, but he said "Sufragio efectivo no reelección" (Valid Suffrage, No Reelection). President Felipe Calderón made a newspaper announcement in which he apologized for this, and said that the notes were going to continue in circulation, and that they would retain their value.