(15) The value of filial piety and four baht money

It was cast in the first year of The Reign of Emperor Xiao of song (454). The back of the face has an inner and outer outline, the face text "filial piety", the back text "four baht", horizontal reading, seal book. It is about 2.2 cm in diameter and weighs 2.8 g. Later, the word "four baht" was removed, and the back text was "filial piety". Due to the increase in the number of pirates, the copper was mixed with lead and tin, and the more it was minted, the smaller and smaller, the currency rose, and the Song Ming Emperor had to order its abolition in the first year of the Tai Dynasty. This coin is another kind of year money after the "Hanxing money". Since then, ancient Chinese era money has become popular.