Check the listing for details. India 1973 Development Oriented 2 Silver Coin Set Rare Proof Set. Listed at 119.00 USD. Here is an opportunity to add or update your collectionOwn A Piece Of HistoryAfter 25 years of Independence and the commemorative coin that was launched in 1972; beginning the year 1973, India started issuing development oriented coins every year. The date of release was 16th August every year. The theme for every year was different with a view to promote and develop all round the country.These Coins were issued on 15-8-1973 to commemorate the 26th Anniversary of India's Independence.Details of coins are as follows:Twenty Rupees: CircularDiameter : 44mmWeight : 30g(50% Silver, 40% Copper, 5% Nickel, 5% Nickel)Ten Rupees: CircularDiameter : 39mmWeight : 22.5g(50% Silver, 40% Copper, 5% Nickel, 5% Zinc)The theme for Year 1973 was “grow more food”.UNC Set: Rs 20 and Rs 10You Will Get The Same Set as Listed ...See Image.