1981, Proof Set, PIE-FORT (Piedfort) Coin, International Year of the Child, Silver 100 Rupees, Bombay Mint, in immaculate condition with original packing in an acrylic case with outer cover without certificate, the coin is in mirror glaze cameo-like finish, extremely rare. Note: "Piedfort" or "piefort" coins feature a thicker planchet and are struck at a higher weight standard than their regular counterparts. To date, this commemorative issue represents the only such type released by the Indian government mint.