Lin Qiaozhi , China
Modern Chinese Scientists
Scott No: 2301-4
Serial number: J173
Values in set: 4
Date of issue: October 10, 1990
Denomination: 68 fen
Designers: Yang Guchang, Liu Xiangping
Size of stamps: 40*30mm
Perforation: 11
Sheet composition: 50 (5*10)
Printing process: Offset
Printing House: Beijing Postage Stamp Printing Works
