The Reserve Bank of India (RBI) has declared a premature redemption price of Rs 9,221 per unit for the Sovereign Gold Bond (SGB) 2017-18 Series III, which is set to expire early on April 16, 2025. Investors who purchased SGBs in this series at the initial issue price of Rs 2,964 per gram in October 2017 can now expect a total return of 211.1 per cent over eight years, excluding semi-annual interest distributions.