On 23 September 2009, the Bank of Mexico introduced two commemorative banknotes: a paper one to celebrate the bicentennial of independence, and a polymer one to celebrate the centennial of the Mexican Revolution.
The 100-peso commemorative with series A/A-A/E has an error in the microprinted text. On the front, the text appears correctly as “SUFRAGIO EFECTIVO Y NO REELECCION.” However, on the back the second word is misspelled as “ELECTIVO.” Apparently a corrected note will appear in 2010, and the error notes will remain in circulation.
Courtesy of Rickey Stein and Thomas Krause.