Penrhyn (Cook Islands)
1974 Christmas IMPERFORATE Set of 4
Singles from Bottom left corner of sheet, including marginal inscription of Art Work and Painter.
On white gummed paper, Mint Never Hinged
Topic: Art, Madonna and Child
5c Adoration of the Kings, by Memling
10c, Adoration of the Shepherds, by Hugo van der Goes
25c, Adoration of the Kings, by Rubens
30c, Holy Family, by Orazio Borgianni
Scott Catalogue: #66-69, Plate Proofs or Imperforate are not listed
Stanley Gibbons Catalogue: #72-5, Plate Proofs or Imperforate are not listed
I believe these to be imperforate 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.