<P> In 1957, India shifted to the decimal system, but for a short period both decimal and non-decimal coins were in circulation . To distinguish between the two pice, the coins minted between 1957 and 1964 have the legend "Naya Paisa" ("new" paisa). The denominations in circulation were 1, 2, 3, 5, 10, 20, 25, 50 (naya) paisa and one rupee which remained as the same pre-decimal value . Therefore pre-decimal coins of one, half and quarter rupees could remain in circulation after decimalisation . </P> <P> The word "naya" was dropped in 1964 . In this year a new denomination the 3 paisa was introduced and in 1968 a 20 paisa coin was minted . Both these coins however did not gain much popularity . The 1, 2 and 3 paisa coins were phased out gradually in the 1970s . In 1982 a new coin, 2 rupee, was introduced as an experiment to replace 2 rupee notes . The 2 rupee coin was not minted again till 1990, after which it was minted every year . </P> <P> Stainless steel coinage of 10, 25 and 50 paisa, was introduced in 1988 and in 1992, a new rupee coin was minted . This coin was smaller and lighter than the older rupee and was also made of stainless steel . In 1992, a 5 rupee Cupronickel coin was introduced . In 2005, 10 rupee coin was minted for the first time . The higher denomination coins were introduced due to increasing demand for change and increasing cost of printing 2, 5 and 10 rupee banknotes . </P> <P> Effective from 30 June 2011, all coins in denominations of 25 paisa and below were officially demonetised . While other special coins were minted in years in the memory of special events or people and these are referred to as commemorative coins . Commemorative coins can be for collectors and also for circulation . They can be found in various denominations . Some of commemorative coins include coins depicting Mahatma Gandhi, Jawaharlal Nehru, Indira Gandhi, B.R. Ambedkar, Rajiv Gandhi, Dnyaneshwar, 1982--Asian Games, Sardar Vallabhbhai Patel, Subhas Chandra Bose, Sri Aurobindo, Chittaranjan Das, Chhatrapati Shivaji and logo of 2010 - Commonwealth Games, Bhagat singh, Rabindranath Tagore . etc </P>

When was 5 rupee coin introduced in india