CHAD (1967) Grain storage center*. Imperforate corner block of 4. Economic development. Scott No 146, Yvert No 144.
AVAILABLE AT $20
BELGIUM (1988) Lyre. Quill pen. Book. Atomic symbols. Ministerial proof. Scott No 1296, Yvert No 2297. Royal Academy of Science, Literature and Fine Arts.
AVAILABLE AT $50
RUSSIA (1982) Quill pen*. Lyre*. Flask*. Illustrated entire (N) promoting educational lectures.
AVAILABLE AT $10
SWITZERLAND (1946) Sailing vessel. Chemical and Botanical Products. Red meter cancellation on cover Meter No 3172: "Importers of chemical products from all countries."
AVAILABLE AT $20