天元通宝小平价格,天元通宝小平图片

天元通宝小平为北元的年号钱;天元通宝背面有"文","武","永","圣","
天元通宝鉴定详情
天元通宝平钱稍多,钱文宋体,折三则难得一见.小平折三均背文.折三
出谱的''天元通宝小平钱''铜材质'
请问天元通宝是哪个朝代?元符通宝请专家人士定价?非诚勿扰,谢谢!