
Scott # 1576-77 MNH, Astronomy 2012
Tycho Brahe, Equatorial Armillary Sphere (1674)
Guo Shoujing, Simplified Armillary Sphere (1675)
Joint Issue with People's Republic of China
Scott # 1576-77 MNH, Astronomy 2012
Tycho Brahe, Equatorial Armillary Sphere (1674)
Guo Shoujing, Simplified Armillary Sphere (1675)
Joint Issue with People's Republic of China