Northern Sung (960-1127 AD), Emperor T'ai Tsu (960 - 976 AD, First emperor of N. Sung Dynasty), orthodox script 'Song Yuan Tong Bao', with long 'Tong Bao'. 3.2g, Bronze, 25.05mm. 'Song Yuan Tong Bao' is the first series coins of the dynasty. Common cast with nice condition.