Rs. 10 Coin issued to commemorate the Diamond Jubilee of the Coir Board of India

The Coir Board is a body established by the Government of India in 1953 under the Coir Industry Act 1953 to promote and develop the coir (coconut fibre) industry in India. As you might be able to tell, it celebrated its 60th anniversary in 2013.

To commemorate this, in July 2014, the Reserve Bank of India put a Rs. 10 coin into circulation to celebrate the 60th anniversary of the Coir Board of India. The details of this coin regarding design, shape, etc. have been notified in the Gazette of India-Extraordinary- Part II-Section 3-Sub-section (i) - No.76 (annexed) dated February 20, 2014 published by the Ministry of Finance, Department of Economic Affairs. The RBI's press release dated 17 July 2014 explains this in detail, and can be accessed here.

This coin has a bi-metallic design. The mint mark is a 'star' (I'm aware that this isn't as clear as I'd like for it to be in the photos and I blame my poor camera quality). The star is evidence that the coin is minted in Hyderabad.