Circa 1800's. Not fast, but this beast could really pull a huge plow.[/img]
Saw this in a local parade yesterday, running under it's own power. A couple of years ago, I saw this one and another slightly different one pulling a two-story house (on iron wheels) around a fairground. Pulling it with easy, by the way.
Single cylinder, chain link steering, and I don't know what the maximum steam pressure is - and the owner probably doesn't know either!