India, Republic, 2006 AD., circulation issue “Unity in Diversity“, Noida mint, 10 Rupees, KM 353.

India, Republic, circulation issue, rev. designed by A. K. Sinha, Noida mint, 2006 AD.,
10 Rupees (ø 27 mm / 7,67 g), bimetallic: copper-nickel center in an aluminium-bronze ring (outer ring 4,45 g. Copper – 92%, Aluminium – 6%, Nickel – 2% ; center piece: 3,26 g. Copper – 75%, Nickel – 25%), 7,71 g theor. mint weight, mintage ? , axes medal alignment ↑↑ (0°) , plain edge,
Obv.: भारत INDIA / सत्यमेव जयते - 10 / 2006 / • , the obverse is divided into three portions by two horizontal lines. The top contains the words "Bharat" in Hindi and "INDIA" in English. Asokan capital with 'Satyameva Jayate' in Hindi below at left, value number 10 at right, date and mintmark • (dot) below.
Rev.: दस रुपये TEN RUPEES , double cross dividing 4 dots (one dot in each corner) (theme: Unity and Diversity, Design – Cross, artist's rendering of "Four heads sharing a common body"), along the left upper periphery value in Hindi left, in English above: value “TEN RUPEES” in English and “Dus Rupaye” in Hindi.
KM 353 .

Year / Mint Mark / Mintage / Mint
2005 / • / ? / Noida Mint (different die orientation, no medal alignment)
2006 / • / ? / Noida Mint
2007 / • / ? / Noida Mint

The Indian 10-rupee coin (₹10) is a denomination of the Indian rupee. The ₹10 coin is the highest denominated coin minted in India since 2005. The present ₹10 coin in circulation is from the 2011 design of the coin. However the ₹10 coins minted before 2011 are also acting as a legal tender in the country.

This issue is one part of a three part series on the 10 Rupee circulation coins.
Part 1: Unity in Diversity
Part 2: Connectivity and IT
Part 3: New Rupee Symbol

The Second Design “Connectivity and IT“ featured two Horizontal lines. the coin featured the lettering "भारत" and "INDIA" on the top, with Lion Capital on Middle and Year of Printing at bottom on the obverse. The reverse of the coin it featured 15 notches and numeral 10 at the middle and at below line the word Rupees in English and रुपये in Hindi was written. This Coin is usually treated as the fake coe to chaos on Social Media.

The Third design of the ₹10 coin wit New Rupee Symbol, 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 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.

Though bimetallic coins are very common in most countries, this is the first time that a bimetallic coin has been released in India. This has caused massive craze among common people for these coins and many stupid people are stockpiling this coin, thinking that it has high value, or maybe its value would be way higher in the times to come. People have hoarded this coin by the hundereds, even thousands, and because of this reason this coin cannot be found in circulation.

More on http://beekar-the-numismatist.blogspot.de/p/decimal-5-rupees-regular.html ; http://coinsofrepublicindia.blogspot.de/2012/07/definitive-coins-ten-rupees-unity-in.html ; https://en.wikipedia.org/wiki/Indian_10-rupee_coin