A lot of numismatic evidence also corroborates the antiquity of Krishna. For instance, excavations at Ai-Khanum, along the border of Afghanistan and the Soviet Union, conducted by P. Bernard and a French archeological expedition, unearthed six rectangular bronze coins issued by the Indo-Greek ruler Agathocles (180?-?165 BC). The coins had script written in both Greek and Brahmi and, most interestingly, show an image of Vishnu, or Vasudeva, carrying a Chakra and a pear-shaped vase, or conchshell, which are two of the four main sacred symbols of God in Vaisnavism. Many other finds of ancient coins also prove the antiquity of Krishna worship in India.
