JAPAN (1960) Observatory*. Okayama Astrophysical Observatory overprinted MIHON (specimen). Scott No 707, Yvert No 659. Not easy to find!
AVAILABLE AT $15
NORTH KOREA (1980) Kepler*. Specimen pair. KSC No 2018, Michel No 2044.
AVAILABLE AT $15
NORTH KOREA (1985) Halley's Comet*. Telescope*. Spacecraft*. Set of 2 specimen pairs. KSC Nos 2544-5, Michel Nos 2676-7.
AVAILABLE AT $30
NORTH KOREA (1991) Observatory*. Antarctic exploration. Specimen pair. KSC No 3080, Michel No 3201.
AVAILABLE AT $15
GERMANY (1986) Halley's comet*. Specimen (overprinted MUSTER). Scott No 1456, Yvert No 1105.
AVAILABLE AT $20
NORTH KOREA (2009) International Year of Astronomy. Set of 4 minisheets of total 13 specimens. Scott Nos 4866-4868b.
AVAILABLE AT $65