EQUATORIAL GUINEA (1974) Argali*. Color red drastically shifted, resulting in a double image. Endangered species set, printed in sheets of 15. Only 22 sheets with this error exist! Scott No 74201, Yvert No PA39-1. Rare!
AVAILABLE AT $20
NORTH KOREA (2001) Goral goat (Nemorrhaedus goral)*. Block of 4 misperforated. KSC No 4141. Scott No 4168.
AVAILABLE AT $30