Stamp Title: China's First Atomic Reactor and Cyclotron Serial number: S28 Values in set: 2 (2-1), Atomic reactor, 8 fen,…
Stamp Title: Forestry Serial number: S27 Values in set: 4 (4-1), Forestry, 8 fen, 26.5*34 mm (4-2), Forest conservation, 8…
Stamp Title: Soviet Sputniks Serial number: S25 Values in set: 3 (3-1), No.1 sputniks, 4 fen, 30*25 mm (3-2), No.3…
Stamp Title: Shisanling Reservoir (Ming Tombs Reservoir) Serial number: S26 Values in set: 2 (2-1), Construction, 4 fen, 34*27.5 mm…
Stamp Title: Regular Issue with Flower Design Serial number: R10 Values in set: 3 (3-1), Penoy, 2 fen, 18*20 mm…