2 exposures in a single frame

2 exposures in a single frame. On the top, a very young boy with his left arm resting on a low table and book. Undetermined painted background. On the bottom, a bust shot of a young man wearing a white shirt. Location: Tamil Nadu, Karaikudi, Vasen Studio. Date of original material: [1951-53]. Size of original print/negative: 4 ¼ x 3 ¼ inches (Quarter). Format of original material: Glass plate black and white negative.