平背五铢，在“五铢”钱中铸造是背无内外廓的一种，铸造数量不多，流通少，但在全国十七个省、十九个市县已出土发现，从出土和发现的实物中看，除铸造的钱体有轻重之别，均为平背。 　　近年来，我也收集到一枚“平背五铢”。该钱是生坑出土物，硬绿锈，钱体轻薄，钱身右侧略 Ping baht five baht, in the “five baht” money casting is no inner and outer back a kind of casting a small number of circulation, but in the country 17 provinces, 19 cities and counties have unearthed found unearthed and unearthed Found in the physical look, in addition to the money cast have the severity of the other, are flat back. In recent years, I also collected a “flat back five baht.” The money is a raw pit unearthed material, hard green rust, thin money body, the right side of the money slightly