NORTH KOREA (1993) Isaac Newton*. Set of 5 overprinted SPECIMEN. KSC Nos 3392-6.
AVAILABLE AT $35
NORTH KOREA (1991) Research ship*. Antarctic exploration. Specimen pair. KSC No 3082, Michel No 3203.
AVAILABLE AT $15
NORTH KOREA (1993) Telescope*. Newton*. Specimen pair. KSC No 3394, Michel No 3485.
AVAILABLE AT $15
NORTH KOREA (1993) Isaac Newton*. Specimen pair. KSC No 3392, Michel No 3483.
AVAILABLE AT $15
NORTH KOREA (1993) Apple tree*. Newton*. Specimen pair. KSC No 3393, Michel No 3484.
AVAILABLE AT $15
GERMANY (1981) Arts and Science Medal*. Specimen (overprinted MUSTER). Scott No 9N464, Yvert No 609.
AVAILABLE AT $12