Technical Innovation
Technical details:
Scott No: 235-236
Serial number: S11
Values in set: 2
Date of issue: December 15, 1954
Denomination: 12 fen
Designer: Sun Chuanzhe
Engraver: Wu Pengyue, Li manceng
Size of stamps: 36.5*22mm
Perforation: 14
Sheet composition: 96(8*12)
Printing process: Engraving
Printing House: Beijing People's Printing Works
SN: (2-1)
Title: Antispin parachute
Value: 8 fen
SN: (2-2)
Title: New tool
Value: 4 fen
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