NIUE (1983a) Right whale*. Set of 6 trial color imperforate margin proofs, showing different colors as they were added to make the final stamp. Save the Whales Campaign. Scott No 380, Yvert No 388. Scarce!
AVAILABLE AT $75
NIUE (1983c) Sei whale*. Set of 6 trial color imperforate margin proofs, showing different colors as they were added to make the final stamp. Save the Whales Campaign. Scott No 382, Yvert No 390. Scarce!
AVAILABLE AT $75