Northern Song Dynasty to Yuan Dynasty, a collection of c. 177 cash coins in one album, starting from Song Yuan Tong Bao which is amongst the first coinage struck by the Northern Song dynasty is 960A.D. to Tian Ding Tong Baostruck by the anti Yuan dynasty rebels in the 1350s,carefully built up during the years, SOLD AS SEEN, NO RETURNS (c.177 coins)