Coins of the Indian rupee rupee, 1/4 rupee, 2 anna, 1 anna, 1/2 anna & 1 pice coins, and are referred to as the anna series or pre-decimal coinage. Under the anna series, one rupee was divided into 16 annas or 64 pice, with each anna equal to 4 pice. In 1957, India shifted to the decimal system, though for a short period of time, both decimal and non-decimal coins were in circulation. To distinguish between the two pice coins in circulation, the coins minted between 1957 and 1964 were printed with the legend “Naya Paisa” (“New Paisa”). The denominations in circulation were 1, 2,
Decimal Day Day to enable them to give change immediately after the changeover. Banks were closed from 3:30 pm on Wednesday 10 February 1971 to 10:00 am on Monday 15 February, to enable all outstanding cheques and credits in the clearing system to be processed and customers' account balances to be converted from £sd to decimal. In many banks the conversion was done manually, as most bank branches were not yet computerised. February had been chosen for Decimal Day because it was the quietest time of the year for the banks, shops, and transport organisations. Many items were priced in both currencies