This film was the Hindi-dubbed version of the Tamil film "Neerum Neruppum" (1971). The 1971 Tamil film itself was the remake of another Tamil film "Apoorva Sagodharargal" (1949), which in turn was based on Alexandre Dumas' French novel "Les Freres Corses" (English: "The Corsican Brothers"), first published in 1844. "Apoorva Sagodharargal" (1949) was part of a trilingual production that was released in Telugu as "Apoorva Sahodarulu" (1949) and in Hindi as "Nishan" (1949). "Neerum Neruppum" (1971) was also remade in Hindi as "Gora Aur Kala" (1972).[1][2]