Kosambi (Pali) or Kaushambi (Sanskrit) was an ancient city in India, characterized by its importance as a trading center along the Ganges Plain and its status as the capital of the Vatsa Kingdom, one of the sixteen mahajanapadas. It was located on the Yamuna River about 56 kilometres (35 mi) southwest of its confluence with the Ganges at Prayaga, which made it a powerful center for trade and beneficial for the Vatsa Kingdom.
Kosambi cast copper coin. 1st century BCE. Inscribed 𑀓𑁄𑀲𑀩𑀺 Kosabi in the Tai Tham script at the top. British Museum.
Woman riding two bulls (bronze), from Kausambi, c. 2000-1750 BCE
Bronze Goddess with Weapons in Her Hair, from Northern India (possibly Kausambi), 2nd century BCE
Two Damaru-shaped coins from the Gangetic Valley.
Vatsa or Vamsa was one of the sixteen Mahajanapadas of Uttarapatha of ancient India mentioned in the Aṅguttara Nikāya.
Vatsya coin (400-300 BCE)