Heisler with six-wheel trucks?

[Quetzal]

Bolivia, I understand.

I'm guessing it's not in line for next product to be manufactured, but -- had to share it.

https://www.facebook.com/photo.php?fbid=10200520346951702&set=a.1718369159581.2098610.1248818826&type=1&theater&notif_t=like

[Ken Clark]

   I believe they are Anglo-Chilian Nitrate Rly "Kitson-Meyers", 3Ft 6In gauge.
     Some of which were sold to the Tatal Rly at a later date.
   Ken Clark
     GWN

[Skarloey Railway]

I agree, they look a lot like Kitson-Meyers. More on the Anglo-Chilean Nitrate Rly here: http://ferrocarriltocopilla.blogspot.co.uk/2010/09/locomotoras-vapor.html