is the 10 rupee coin banned
Several people have received SMS messages from RBI that reads: “Coins are available in different designs due to their long life. Accept them without fear…” Interestingly, to clear all confusion for once and for all, the message says to give a missed call to 14440, and instantly expect a call back from the Reserve Bank of India. The central bank then clarifies on the recorded voice message that the Rs 10 coins in issued in 14 designs are all legally valid for transaction.
The Reserve Bank further said that it has issued 14 different designs, and also informed about the disticitve features of the same in various press releases. “As coins have longer life, coins of different designs and shapes circulate in the market at the same time. So far the Reserve Bank has issued ₹ 10 coins in 14 designs and the public has been informed of their distinctive features through Press Releases (list appended). All these coins are legal tender and can be accepted for transactions,” the apex bank noted.
It was later clarified by the Reserve Bank of India (RBI) that the “alleged fake” coin was the earlier 2008 design, which predated the adoption of the ‘₹’ symbol in 2010, and was still in legal circulation, along with the 2011 design and those refusing to accept it could face legal action.   
The third design of the ₹10 coin, minted since 2011 features the lettering “भारत” on left and “INDIA” on right on the outer ring, and the year of mint and mint mark below. At the center part of the coin’s obverse is the Lion capital with the lettering “सत्यमेव जयते” below it. On the reverse it features 10 notches with the ₹ sign below it, and the number 10 below the ₹ sign.  
Some rumours said counterfeit coins in two designs had flooded the market. The others claimed the RBI had phased out the coins and those in circulation were fake. There was also talk of the gold polish coming off.
Reports have poured in of shopkeepers, kiosks owners and auto rickshaw drivers in and around Delhi returning R10 coins and asking for currency notes after a WhatsApp message, shared widely, claimed the coin was declared invalid by the central bank.
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Confusion continues over Rs 10 coins, local shops reject tender
In January, the Reserve Bank of India repeated yet again that Rs 10 coins are legal, but many trades and services in Bengaluru continue to turn them down.