China 1958 STAMP set S14 used

Xikang-Tibet and Qinghai-Tibet Highways

Technical details:

Scott No: 287-289
Serial number: S14
Values in set: 3
Date of issue: March 30, 1956
Denomination: 20 fen
Designer: Lu Tianjiao
Engraver: Gao Zhengyu, Song Guangzeng, Kong Shaohui
Size of stamps:
38*25.5mm for Value 1, 3;
21.5*41mm for Value 2
Perforation: 14
Sheet composition:
80(8*10) for Value 1, 3;
91(13*7) for Value 2
Printing process: Engraving
Printing House: Beijing People's Printing Works

SN: (3-1)
Title: Xikang-Tibet and Qinghai-Tibet Highways
Value: 4 fen
Size: 38*25.5 mm

SN: (3-2)
Title: Tightwire drawbridge on the Dadu River(Xikang-Tibet Highway)
Value: 8 fen
Size: 21.5*41 mm

SN: (3-3)
Title: Opening to traffic
Value: 8 fen
Size: 38*25.5 mm