There have few more versions private issueed for this 12 pieces lunar sets, this is the one certified by the #1 Chinese grading company—GongBo, Grade68, with highest market value within the all issues. First round of Lunar 1 Yuan issue, all coins are in nice choice BU conditions. Guarantee all the coins we listed to be genuine pieces. (Registered and can be Traced), and we are fully responsible for any damage or loss for your package during the process of mailing. Please allow about 2-4 weeks to receive your package. For US Buyers: There have No Tariff Issues you need to worry for this item.