OK: now you have my attention, Robert.
You have one of the really, really rare 'Wiles' cookers .....because it wasn't built by Wiles. It was one of less than 200 built by a company called Boyded, located in NSW. The Army were so frustrated with the slow rate of production from South Australia that they had the NSW Board of Business Administration award a contract to Boyded to build Army Steam Kitchens to the Wiles basic design, as improved by Army. Wiles were not amused. There was all sorts of problems with the contract, and not due to Boyden, either, if you get my drift. Certain assemblies were Wiles patents.
I don't know much about the Boyded companmy, but would like to find out more, as I'm sure you would now, too.
I'd be really interested to know the boiler details and any info from the nomenclature plate, please: this would be a rare find in any condition, let alone in the condition in which you have found it.
Regards
Mike C