 The composition of the one-baht coin changed from cupronickel to nickel-clad iron, reducing the mass from 3.4 grams to 3.0 grams.The obverse image has also been updated to a more recent portrait of the king.The Ministry of Finance announced on March 28, 2018 that the first coins featuring the portrait of His Majesty King Maha Vajiralongkorn Bodindradebayavarangkun will be put in circulation on April 6.