Scientists of Ancient China - Chang-Heng, 78-139 1956
Now showing: China, Peoples Rep. - Postage stamps - 1956 - Scientists of Ancient China - Chang-Heng, 78-139 - 1 stamps.
Now showing: China, Peoples Rep. - Postage stamps - 1956 - Scientists of Ancient China - Chang-Heng, 78-139 - 1 stamps.
![[Scientists of Ancient China - Chang-Heng, 78-139, type KW1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/China,-Peoples-Rep./Postage-stamps/KW1-s.jpg)
