and 20 paisa coins were discontinued though they continued to be minted in Series III till 1994 and 1997 respectively. 10 paisa, 25 paisa and 50 paisa coins were minted in Stainless Steel. 1992 onwards, 1 Re coin was also minted in Steel and ₹2 and ₹5 coins in Copper Nickel were introduced. The very considerable costs of managing note issues of ₹1, ₹2, and ₹5 led to the gradual coinage of these denominations. These coins continued to be minted till 2004, when the Unity in diversity series was launched. Cupro-Nickel coins are not minted anymore. Ferritic Stainless Steel coins of Two and Five Rupee denominations are currently in production. 2004 Unity in diversity Series In 2004, RBI issued a series in denominations of 1 rupee, followed by 2 rupee and 10 rupee in 2005. These issues however came into circulation in 2006, and created a controversy over their design. 10 rupee coins were the first bimetallic coins issued in India, and because of the controversy and being minted in only one mint, most of the coinage never found its way into circulation. The ones which did were hoarded by Coin collectors and Coin hoarders. 2007 Hasta Mudra Series In 2007 RBI issued a new series of Coins, The Hasta Mudra Series, in coins of 50 paisa, 1 rupee and 2 rupee denominations. These coins are stainless steel and feature various Hasta Mudras (hand gestures in Indian Classical dance). The 5 rupee piece that features waves in its design was also issued in 2007, along with a new 10 rupee coin. However, the design of the 10 rupee piece changed in 2008. The 5 rupee coin design was again reverted to the previous design, though it was issued in Nickel-brass instead of Copper-nickel. However, these 5 rupee and 10 rupee coins were not the part of the Hasta Mudra series. 2007 Common Circulation Series The 5 rupee and 10 rupee coins were issued for common circulation in 2007, 2008, 2009 with changed designs and continued to be minted until the introduction of the Rupee Symbol series in 2011. 2011 Series with the Rupee Symbol (₹) In 2011, RBI issued a series in denominations of 50p, ₹1, ₹2, ₹5, and ₹10. The 50p, ₹1, ₹2, and ₹5 designs are identical except the absence of the rupee symbol in 50p coin. The ₹10 coin continued to be issued in bimetallic issues as