Another find at Geno Sartori's Green Flea table. Not sure of the date, but I don't believe these are very old; the colors are so vibrant. The envelope on the back says General Distributor: Guozi Shudian, China Publications Centre, P.O. Box 399 Peking, China. Because of the use of the old Peking (instead of Beijing), I would trace these to the 1970s or mid 1980s.
