Mint Marks

The responsibility for coinage vests with the Government of India in terms of the Coinage Act, 1906 as amended from time to time. The designing and minting of coins in various denominations is also the responsibility of the Government of India.

Coins are minted at the four India Government Mints at Mumbai, Kolkata, Hyderabad and Noida. Apart from these Mints Indian Government has minted coins from foreign mints due to scarcity of Coins.

Mumbai Mint - The Mumbai Mint has a small dot or diamond mint mark under Date of the Coin.
Kolkata Mint - The Kolkata Mint has No Mint Mark beneath the date of coin.
Hyderabad Mint - The Hyderabad Mint has split diamond or a dot in diamond or five pointed STAR under the date of coin.
Noida Mint - The Noida Mint has a small or thick dot under the date of the Coin.

Foreign Mints
Taegu (Korea) Mint - The Taegu mint has a "Five Pointed Star"under the date of the coin but exactly below the first or Last Digits of dates 1985 (50 Paise) and 1997 (2 Rupees).
Royal London Mint - The Birmingham Mint has a small dot under the date of the coin but exactly below the First Digit of Date 1985 (1 Rupee).
Royal Canadian Mint, Ottawa - This Ottawa Mint has a "C" mint mark under the date of the coin.
Mexico Mint - The Mexico City Mint has an mint mark of M beneath O under the date of the coin.
Kremnica, Slovakia – This Mint has a mint mark of MK in circle below the date of the coin.
Moscow – This mint has a mint mark of MMD in oval below the date of the coin.