2 exposures in a single frame

2 exposures in a single frame. Studio bust-shot portrait in one negative. On the left, a child wearing a shirt. On the right, a lady wears a sari and a blouse. She has glasses. Location: Tamil Nadu, Karaikudi, Vasen Studio. Date of original material: [1952-53]. Size of original print/negative: 4 ¼ x 3 ¼ inches (Quarter). Format of original material: Glass plate black and white negative.