Watch List notes:

China - Lot with China, Northern Song 10 wen (1102-06) Obv: Chong Ning zhong bao (Li script) / Rev: plain (Hartill 16.407); added 2x Charm or Amulet with the Lei Ting Invocation with (Certified) Export Approval Seal and it is called a "Jianding". They have been issued from around 1949 and are still being put on any old looking porcelain (and coins, as in this case) which are to be allowed to be exported out of China. It does not guarantee anything except this