The Treasury Department plans to mint commemorative coins to mark the cremation ceremony for His Majesty King Bhumibol Adulyadej.
Chakkrit Parapuntakul, director-general of the department, said it could take some months to produce the coins, which also need royal approval.
The government has not announced the cremation date yet, but has indicated it will be held after the one-year mourning period.
The commemorative coins will have an illustration of the royal crematorium designed by the Fine Arts Department on their backs, he said.
There will be four types of coins -- 99%-pure gold, silver, and both small and large-sized bronze.
The number of coins produced will depend on advance orders, and the lowest price for a coin will be set at 100 baht, Mr Chakkrit said.
Ordinary coins with an illustration of King Rama IX will still circulate in the system, and are likely to last between seven and nine years, he noted.
The department also aims to produce 200,000 more cupronickel coins which commemorate the 70th anniversary of His Majesty's reign following high demand for the coins.
About 2.8 million cupronickel coins, a mixture of copper and nickel, to mark the event have been sold.
Additionally, 10,000 gold coins and 50,000 silver coins made for the same occasion were also sold out, though these kinds of coins will no longer be produced.
Mr Chakkrit said the department still has 24 types of commemorative coins, totalling three to four million, linked to the late King. They are still available for purchase.