Niue

1979 Easter, IMPERFORATE Set of 2 and Set of 2 M/S’s

Single stamps from top right corner and left margin of the sheet

On white gummed paper, Mint Never Hinged

Topic: Art, Paintings by Gregorio Fernandez & Pedro Roldan

Stanley Gibbons Catalogue: #274-5 & MS277

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.