 The denominations from 25 sentimo up to 2 peso were smaller, and the 5-peso coin was reintroduced.Some commemorative coins in 1991 were minted in the larger size.The size of the 25- and 50-sentimo coins of the "Improved Flora and Fauna Series" are same as the size of the twenty-five-satang and fifty-satang coins of Thailand, and the 50-sentimo (IFF series) and 50-satang coins (Thailand) both have reeded edges.