Keywords: Jose Domingo Duquesne.svg en Image photographed from the original Cleaned and enhanced using GIMP vectorized using Inkscape Original image from El Dorado by Liborio Zerda Engraving by Antonio Rodríguez 1882 Engraving by Antonio Rodríguez 1882 Digital version by Manuel Arturo Izquierdo 2008 original work 1882 svg digital version 2008 Numeral systems |