Aitutaki (Cook Islands)

1985 Life & Times of the Queen Mother IMPERF Plate Proofs Set of 4 Sheetlets

Sheetlets of 4 stamps

On white gummed paper MNH

Stanley Gibbons Catalogue: #523-6

Plate Proofs or Imperforate are not listed

I believe these to be Plate Proofs. 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.