Mint Identification -
Calcutta - No mint mark  (1877, 1878, 1886, 1888)
Calcutta -  "C" Incused on bottom flower (1879-1891, 1893, 1894,1896-1898, 1900, 1901)
Bombay - Dot (1877, 1881, 1882, 1883)
Bombay -  "B" raised on top flower (1884, 1885, 1886, 1887, 1888)
Bombay -  "B" Incused on top flower  (1885, 1888-1894, 1897, 1898, 1900)
Note: Bombay with "B" raised and dot, and "B" Incused and dot exist, classified under mint Variety collection