ancient Chinese bronze round coin with a square central hole, labeled with handwritten Chinese characters "皇宋通宝" (Huang Song Tong Bao) on its cardboard holder.
CoinType: Huang Song Tong Bao (皇宋通寶)
Period: Northern Song Dynasty, issued during the reign of Emperor Renzong (Zhao Zhen).
Dates: Minted as a non-reign title coin (國號錢) approximately between 1039 and 1054 AD