MONACO (1962) Galeazzi's turret*. Trial color proofs in strip of 5 with multicolor. Scott No 522, Yvert No 592.
AVAILABLE AT $90
MONACO (1962) Williamson's photosphere*. Trial color proofs in strip of 5 with multicolor. Scott No 523, Yvert No 593.
AVAILABLE AT $90
MONACO (1962) Fulton's "Nautilus"*. Modern submarine*. Trial color proofs in strip of 5 with multicolor. Scott No 526, Yvert No 596.
AVAILABLE AT $90
COMORO ISLANDS (1972) Skin diver* spearfishing*. Fish*. Trial color plate proof in full sheet of 25. Scott No C44, Yvert No PA44. Note: sheet was too big to fit in scanner, so top of sheet not shown.
AVAILABLE AT $325