Mint Identification
Calcutta - Diameter 26.10 - 26.30 without "V" privy mark & no mint mark (issues between 1862-1865) Calcutta - Diameter 25.30 - 25.40 with "V" raised privy mark & no mint mark (issues after 1865)
Bombay - Diameter 25.30 - 25.50 with "V" incused privy mark & no mint mark(issues between 1864-1866) Bombay - Diameter 25.30 - 25.50 with "V" incused privy mark & dot (issues between 1864-1866)
Madras - Diameter 25.30 - 25.50mm without privy mark (issues after 1862)