What kind of stamps are more valuable?

1, issued for a long time (e.g., Daqing Dalong stamps, stamps in the early Republic of China and liberated areas, etc.). );

2. Small circulation (such as 1980, the first set of stamps for the Year of the Monkey in New China, etc.). );

3. The historical background of the issue is special (such as the stamps of New China during the Cultural Revolution, etc.). );

4. After the issue, it is found that there is a major mistake and it is recovered (such as the "National Mountain and River Red" stamp. );

5. Early New China sheetlets (such as Mei Lanfang). );

6. The theme is popular and the circulation is small (such as "Xu Beihong's Painting-Running Horse", etc.). );

7. Most J and T stamp sheetlets issued before1991(such as "Yunnan Camellia" sheetlet, etc. );

8. 199 1 years ago won the best stamp award (such as 1990 best stamp award "Han xizai's Night Banquet", etc. );

9. Recently released new varieties, and the circulation is small, which cannot be found in general stamp yearbooks (such as "Andersen's fairy tale stickers", etc.). );

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