Coins are contemporary document in metal. Over the years, they have played important role in the study, construction and re-construction of the history. Their remarkable contribution is universally recognized. Coins were struck by rulers in exercise of their royal prerogative. Many rulers, who were unknown to history, have been noticed and studied by their coins.

Department of Archaeology and Museums, Govt. of Rajasthan possesses a rich collection of coins, ranging in date from 6^th century BC to the mid 20^th Century. Earliest types of coins are of punch marked variety. These are hammered silver pieces in irregular shapes- circular, square or rectangular. They do not bear name of any ruler or date, but only symbols. Scholars believe that they remained in circulation from 6^th century BC to about 2^nd century AD and are found from all over the country.

Chronologically, Kushana rulers issued coins in their names. Their collection has copper coins of Kadphises-II and Kanishka. Next comes coins issued by Gupta Emperors (320-455) Kach Gupta, Samudra Gupta, Chandragupta-II, Skandgupta and of Kumargupta, these are in silver and gold. Gupta coins show portrait of the ruler and their lord, these are highly artistic and finished in minute details.

Beside these the collection has a few Indo- Greek and large number of Indo-Sassanian coins in silver. The second millennium AD brings innumerable variety of coins issued by Sultans of Delhi, Mughal Emperors, Royal State of Rajasthan, East India Company and the British crown.