This is a depiction of Krishna with his beloved Gopi, Radha. Krishna in this form is known as Radhakrishna. Not a uncommon name among South Indians.
These bronzes are from Eastern India and may be from 19th century. The figures are cast separately to their respective bases. The figures slide into the bases. Such construction is more common among the bronzes from Karnataka.
Krishna is usually blue in color, as shown in numerous paintings, and hence he is shown here in darker color. The difference in color is due to higher copper content.
The figures are 25.8 cms (Krishna) and 25 cms (Radha) in height, keeping in tradition of giving male images the height advantage.