This image posted here courtesy of Fabian Pesikonis, the man behind the great blog "Carros de Combate" (fighting vehicles in spanish). Check out Fabian's blog for more photos.
This tank is displayed at the base of a monument honoring the III Argentine Army Corps. I maybe wrong but this looks like a Sherman Ic "Firefly", hybrid variant (welded aft joined to a cast glacis). I can't be sure about the gun, because the Argentine Army modified con gusto the stock guns of these Sherman exports.
This display is a couple of kilometers west of the city of Cordoba, Argentina and some 90 kilometers south of my hometown. I may have traveled past this site like a million times on my way to college. Never payed attention to it (maybe too focused on parties and girls by that time).