It is not commercially available it's a research and historical reserve archive university holding I believe. a
It just went through a restoration project completed in 2016 and was a 9 year project headed by Luis Horta, coordinator of la Cineteca de la Universidad de Chile ,it was a collaborative effort with the original degradesd source archived film with la Universidad Nacional Autónoma de México (UNAM).
The restored film was premiered this past October 12 at the 2017 Festival Internacional de Cine de Valdivia
Given it's original premiere in Chile in 1935 and that the copy was a Mexico national archived item, it will likely be held in permanent research library reserve at UNAM and If there is a second copy made, at the University of Chile.