China 1981 R21 Regular Stamps with Design of China Scenery

China 1981 R21 Regular Stamps with Design of China Scenery

https://www.delcampe.com/en_US/collectibles/stamps/china-1949-people-s-republic-unused-stamps-3/china-1981-r21-regular-stamps-with-design-of-china-scenery-484354579.html