Wow, thanks Gadge, I knew there would have to be someone out there that had seen one of these before! I know of a "Ariens by Mobilco" machine in Hamilton, Vic, and as I suspected, and said by you, is a later machine. Something I have omitted from the thread, is the rear tyres have the date stamp of "1866", so I know they were made in the 18th week of 1966.

Thanks.