Is that KAI36? Maybe KA136? Regardless can’t find any information on what this might have been… perhaps it’s one of the famous ones? A Spitfire or Hurricane? It doesn’t look particularly large so maybe.
I like to think that my father drove his parents mad for a few months by refusing to wear any clothes other than these white shorts and a pair of sandals. “The boy is going native! What are we to do?!”