Jack, Sir Bat and Kye,
you're all blowing my mind! Didn't think there be such unique looking machines. I must be experiencing what the British felt seeing their first Australian mammals.
Kye, that's one angry/mean/unsafe(!) looking machine!
Sir Bat and Jack, I was just wondering whether that machine may actually have been an engineering or experimental prototype? Hence the Property of..." label as it perhaps was never meant to leave. If this is so, you have a unique item! (and hopefully they don't want it back)
But I can't see how it would work effectively, it would require the smoothest and flattest of lawns (hence the photo on a bowling green), any stone or bump anywhere in front would hit a roller (unlike 2 wheels at the outer edge), even then the rotary action would not produce the result you'd want? It must always mow low- not much height adjustment?
Sir Bat, I don't know much about this field yet but it seems to me you've got a great eye for finding the unusual and unique. Much better than 'run-of-the-mill'...if perhaps not as lucrative in some cases. Good luck with the collecting, I look forward to seeing some more!