 The 10 baht is a perfect copy of the 500 lire coin even in its alloy, being made of acmonital for the outer ring and bronzital for the centre plug, but slightly larger (26 mm to 25.80 mm) and heavier (8.5 g to 6.8 g).In 2009, a new series of Thai baht coins were released in circulation.The Ten-baht coin was issued for this series, the difference is the redesign of the portrait of King Bhumibol Adulyadej on the obverse, to reflect his current age.