The National Archives of India is the custodian of the records of enduring value of the Government of India. Established on 11 March, 1891 at Calcutta (Kolkata) as the Imperial Record Department, it is the biggest archival repository in South Asia. It has a vast corpus of records viz., public records, private papers, oriental records, cartographic records and microfilms, which constitute an invaluable source of information for scholars-administrators and users of archives. The Director General of Archives, heading the Department has been given the mandate for the implementation of the Public Records Act, 1993 and the rules made there under, the Public Records Rules, 1997 for the management, administration and preservation of public records in the Ministries, Departments, Public Sector undertakings etc. of the Central Government. Located at the heart of New Delhi, the Department functions as an Attached Office of the Ministry of Culture and have one Regional Office at Bhopal and three Records Centres at Bhubaneswar, Jaipur and Puducherry. The Department celebrated its 125th year of the foundation during 2015-16. DENOMINATION OF THE COIN SHAPE, DIAMETER & No. OF SERRATION WEIGHT METAL COMPOSITION FIFTY RUPEES 4. CIRCULAR 5. DIAMETER – 44mm 6. SERRATIONS - 200 35.00 gms Quaternary Alloy Silver- 50 %, Copper - 40 %, Nickel- 05 % and Zinc- 05 % TEN RUPEES 1. CIRCUALR 2. DIAMETER – 27 mm 3. BI-METTALIC 7.71 gms Ring: Aluminum Bronze Cu: 92% Al6% Ni: 2% Core: Copper Nickel Cu: 75% Ni 25%