The coin contains approximately 11.66 grams of 91.7% pure silver, giving it an intrinsic silver melt value alone, while numismatic and historical collector demand drives up the retail price.
The 1918 One Rupee was struck at the Bombay and Calcutta mints.
Bombay mint coins often carry a small diamond/dot mark at the bottom of the reverse side and are generally priced slightly higher than Calcutta mint coins by collectors.
The obverse features the crowned bust of King George V, and the reverse displays a floral wreath design with "1 Rupee India 1918"