GERMANY (BERLIN) (1990) Ernst Rudorff*, conservationist & composer. Scott No 9N586. Yvert No 823. "MUSTER" (Specimen) overprint.
AVAILABLE AT $20
JAPAN (1993) Japanese cranes*. 5th RAMSAR (wetlands) Convention issue se-tenant pair overprinted MIHON (specimen). Scott No 2202a, Yvert Nos 2044-5. Scarce!
AVAILABLE AT $40