Posted in Web Centenario, gold, Banco de México – Bank of Mexico August 31, 2019 Banxico initial page in english. Centenario (50 gold pesos) This piece was coined in 1921 as hard currency to commemorate the first 100 years (centennial) of the Mexican Independence. Source:: http://www.banxico.org.mx/billetes-y-monedas/servicios/venta-de-monedas-medallas-billetes-y-otros-product/monedas-y-medallas-de-oro/familia-del-centenario-/centenario—english.html