I'd like to know of this light fitting is a standard type of light fitting (and if so, what is it called), and whether or not I'd be likely to find an existing globe / cover that mounts over the fitting. In case it's relevant to identify the fitting, I'm in Australia.
The bracket is a square piece of metal that hangs out from the wall, with the outer edges of the square measuring 20cmx20cm and the inner edges measuring 16cmx16cm with two small notches in the bottom edge.
Best Answer
Save yourself a lot of trouble, and purchase an entirely new fixture. If nothing else you'll get more light out of it (note the rather limited reflector at the back of the luminary).
In our throwaway and style driven world, models change and few companies provide spare parts.