- Issue date: 11th April 1986
- one value
- Designed by: Yuan Jia
- Printed by: Postage Stamp Printing House, Beijing
- Print process: photogravure
- stamp format height 26mm x width 31mm
- Perforations: 11.5 x 11.5
20fen ~ Halley's Comet passing Earth, and cometry calligraphics