Help with old casement window hardware

G'Day from the states, mates! hopefully someone can help. My Mom has an old casement window that has fallen out. Upon inspection, there are no side hinges. The hinge is attached to the bracket that is attached to the window (one on top, one on bottom). I have searched near and far and can't find anything that even remotely looks like this. I don't even know what to call it. I can't find a name on the window or the bracket, and replacing the whole window is not an option. :?


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