S28/TE28/特28, China’s First Atomic Reactor and Cyclotron《中国第一个原子反应堆和回旋加速器》
S28/TE28/特28, China's First Atomic Reactor and Cyclotron《中国第一个原子反应堆和回旋加速器》 Stamp Title: China's First Atomic Reactor and Cyclotron Serial number: S28 Values in set: 2 (2-1), Atomic reactor, 8 fen, 38*27.5 mm (2-2), Cyclotron, 20 fen, 38*27.5 mm Date of issue: December 30, 1958 Denomination: 28 fen Designer: Sun Chuanzhe, Liu Shuoren, Wu Jiankun Engraver: Sun [...]