CONGO (1961) Sloan's viperfish*. Scott No 97. Yvert No 143. Trial Color Plate Proofs in strip of 5 with multicolor.
AVAILABLE AT $75
CONGO (1961) Hatchetfish*. Scott No 100. Yvert No 146. Trial Color Plate Proofs in strip of 5 with multicolor.
AVAILABLE AT $75
CONGO (1961) Caulolepis longidens*. Scott No 101. Yvert No 147. Trial Color Plate Proofs in strip of 5 with multicolor. What long teeth it has!
AVAILABLE AT $75
CONGO (1961c) Rainbow runner fish*. Scott No 99. Yvert No 145. Trial Color Plate Proofs in strip of 5 with multicolor. **.
AVAILABLE AT $75
CONGO (1973) Kronenbourg Laboratory*. Trial color proofs in margin band of 5 with multicolor. Scott No 279, Yvert No 329. Hard to find!
AVAILABLE AT $75
CONGO (1973) Automatic control room*. Trial color proofs in margin band of 5 with multicolor. Scott No 281, Yvert No 331. Scarce!
AVAILABLE AT $75
CONGO (1973) Grain*. Emblème de l'F.A.O.*. Essais de couleur en bande de 5 dont polychrome. 10e anniversaire de programme alimentaire mondiale. Yvert No 343, Scott No 293. Très beau!
AVAILABLE AT $75
CONGO (1973) Grain*. UN and FAO emblems*. Trial color proofs in band of 5 with multicolor. 10th anniversary of World Food Program. Scott No 294, Yvert Mo 344. Hard to find!
AVAILABLE AT $75
AVAILABLE AT $80
AVAILABLE AT $60
CONGO (1981) Disabled people*. Trial color proofs in strip of 5 with multicolor. International Year of the Disabled. Scott No 590, Yvert No 631.
AVAILABLE AT $60