The India Post has offered a discount for the Akshaya Tritiya season till June 30. Those who buy a 10-gram gold coin will get either a 0.5 gram gold coin free of cost or a discount of 6 per cent on that day's retail price. Apart from the usual denominations of 0.5 gram, 1 gram, 5 gram, 8 gram and 20 gram, this year India Post has introduced 10-gram and 50-gram coins in tamper-proof packaging. The gold coins are of 24 carats with 99.99 per cent purity and bearing the India Post logo. They are manufactured by Valcambi SA, Switzerland. The post offices selling gold coins under Calicut Division are Calicut Head Office, Calicut Civil Station Head Office, Kallai, Kunnamangalam, Feroke, Calicut Beach and Kalpetta Head Office. The denominations of 10gram, 20 gram and 50 gram will be available only at Calicut Head Office and Kalpetta Head Office, a press release said.