sentences:  The Nandipada symbol also happens to be similar to the Brahmi letter "ma".The Nandipada appears on numerous ancient Indian coins, such as coins from Taxila dating to the 2nd century BCE.The symbol also appears on the zebu bull on the reverse if often shown with a Nandipada taurine mark on its hump on the less worn coins, which reinforces the role of the animal as a symbol, religious or geographic, rather than just the depiction of an animal for decorative purposes.