Reserve bank of India (RBI) has notified discontinuing coins of 25 (and below) from 30.06.2011. It is time that RBI may plan for reducing sizes of other coins of 50-paise and one rupee to reduce minting-cost and to ease burden on pockets.
Read this : 25 paise coin discontinued after June 30
However 2-rupee coins need to be discontinued because usually consumers have either to pay 2-rupee coins in place of 1-rupee coins, or shopkeepers gives unwanted items like candies etc in place of balance 1-rupee coin to be returned. This is because of the fact that currency-chests often force 2-rupee coin-bags because of usual short supply one 1-rupee coins. Most people in practice try to get rid of 2-rupee coins.
Design of bi-colour 10-rupee coins is not proper, and needs to be rectified. It will be better if it may also be attractively designed in a bigger size like single yellow-coloured 5-rupee coins.
It is time to discontinue printing of currency-notes of rupees 5 and 10 with more coins of these denominations put in circulation. It will not only save high printing-cost of low denomination notes with much lower life, but also will pave for further saving on currency-printing by reducing sizes of currency-notes of other denominations. It is not understood how and why RBI re-introduced 5-rupee notes after they were once discontinued to be printed some decades ago!
However to practically check currency-related crimes like fake currency, black money, cash-loot etc, RBI should follow advanced countries by discontinuing printing of higher denomination currency of rupees 500 and 1000.