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Rafael Alonso
Country
China
Rafael Alonso Garcia
Characters
Owner
Rafael Alonso Garcia
Observations
ZU CHONGZCHI, mathematician who lived from 429-500 AD, who precisely calculated the n? pi=3.14159265
Country
China
Face value
8
Year
1955
State
Used
Status
Exhibition - Non-transferable
Category
Science
Format
Vertical
Color
ultramar
Other information
Perforated stamp
visualizations
148