The Australian Chamberlain company was eventually taken over by John Deere and for a while John Deere models were made in Australia by Chamberlain, often carrying both manufacturer's logos. This 2-wheel drive 1980s 85 HP 4080 was one of these models and was made from 1975-85.
It is one of the largest production tractors in the world, and the largest made by John Deere upon its release in 2007. Description from abstract.desktopnexus.com. I searched for this on bing.com/images