INDIA: Republic, Proof Set (10 pieces), 1975, KM-PS19, RB-48, contains 1, 2, 3, 5, 10, 25, and 50 paise, 1 rupee, and Equality, Development, Peace commemorative 10 rupees & 50 rupees, plus mint token, in original acrylic case, with certificate, and original box of issue (in excellent condition), only 2370 sets sold, Proof, S. From 1975 until at least 2011, proof sets in the Republic of India were almost never minted in quantities exceeding 3000 pieces. In a huge country with millions of coin collectors, interest in these truly rare sets is likely to increase.
Estimate: 130-170 USD