Special Mint Set of Subhash Chandra Bose Centenary, 1997, issued only to the members of the Calcutta Mint Co-op Credit Society Ltd, as a part of the Platinum Jubilee Celebration of the Calcutta Mint Co-op Credit Society Ltd, 1930-2005; Rs. 50 and Rs. 10, with the Mint Token on one side and details of the Credit Society on the other; issued in 2005. Not issued to general public, Very Rare.