Niue
1984 “Ausipex” Intl Stamp Exhib., IMPERFORATE M/S MNH

Topic: Mammals/Marsupials

Face Value $3.50

On white gummed paper

Condition:  Mint Never Hinged

Stanley Gibbons Catalogue: #MS560, Value £4.00 (2008) for normal stamps

Plate Proofs or Imperforate are not listed

Scott Catalogue: #445, Value US$6.00 (2009) for normal stamps

Plate Proofs or Imperforate are not listed

I believe this to be Plate Proof. The printer of this stamp issue Fournier S.A sold its philatelic archives of stamp artwork and proofs in 2007 through the German stamp dealer and auction house Gärtner.