NIGER (1967) Maritime weather station*. Trial color proofs in strip of 5. Scott No C71, Yvert No PA71.
AVAILABLE AT $65
ETHIOPIA (1973) WMO emblem*. Set of 4 progressive proofs. Scott No 661, Yvert No 666. Centenary of Meteorological Cooperation.
AVAILABLE AT $100
ETHIOPIA (1973) Anemometer*. WMO emblem*. Set of 2 progressive proofs. Scott No 662, Yvert No 667. Centenary of Meteorological Cooperation.
AVAILABLE AT $100
CONGO (1964) Barograph*. WMO emblem*. Trial color proofs in strip of 5.. World Meteorology Day. Scott No 111, Yvert No 159.
AVAILABLE AT $80
AVAILABLE AT $100