CAMEROUN (1972) Chemical lab apparatus*. Imperforate corner block of 4. President Ahidjo Prize. Scott No 545, Yvert No 525.
AVAILABLE AT $20
RWANDA (1975) Chemist in laboratory. Imperforate proof. Scott No 678. 10th anniversary of Rwanda University.
AVAILABLE AT $20
RWANDA (1975) Chemist in laboratory. Imperforate block of 4. Scott No 678. 10th anniversary of Rwanda University.
AVAILABLE AT $40
RWANDA (1975) Chemist in laboratory. Imperforate pair. Scott No 678. 10th anniversary of Rwanda University.
AVAILABLE AT $20
MALI (1983) Lavoisier*. Laboratory apparatus*. Formula for water*. Imperforate pair commemorating Bicentenary of Lavoisier's Water Analysis. Scott No 476, Yvert No 475. Hard to find!
AVAILABLE AT $10
NEW CALEDONIA (1993) Distillation of attar from Niaouli flowers*. Imperforate corner block of 4. Scott No C243, Yvert No PA297.
AVAILABLE AT $25
NEW CALEDONIA (1993) Distillation of attar from Niaouli flowers*. Imperforate pair. Scott No C243, Yvert No PA297.
AVAILABLE AT $12