Mint Identification
Calcutta - No mint mark (1877, 1879, 1888)
Calcutta - "C" incused (1879-1887, 1889-1898, 1900, 1901)
Bombay - Dot (1877-1879, 1881-1884)
Bombay- "B" raised (1884, 1885, 1890, 1900, 1901)
Bombay- "B" Incused (1884, 1886-1894, 1896-1898, 1900, 1901)
Note: Bombay with no mint mark, and "B" incused with dot exist, classified under mint Variety collection