Although the double-flag coins have gone through endless years, they have very obvious historical transitional characteristics and have indescribable collecting value. It has high historical value, artistic value and collection value. Throughout the money market in recent years, the double-flag coin, as an orderly ancient treasure, has been particularly favored, and the famous old Tibetan army has sprung up, and the quality has been paid more and more attention. Prices are higher, but they are also sought after. There are several phenomena worthy of attention: first, the ancient treasures with orderly and guaranteed quality are particularly favored, and Tibetans are flourishing, even at higher prices. Second, the famous old Tibetan rubbings have sprung up. In the past few years, people have paid much attention to the physical objects of coins and paid little attention to the material things. However, recently, the carriers of coin culture (such as rubbings, books and other materials) have also been paid more and more attention. Third, more and more attention has been paid to the quality of each other. In the past, the main collecting varieties of coins were not so critical of the quality, but in recent years, the quality of coins has been highly improved.