Hand with Reflecting Sphere” Puzzle 1000 pieces – M.C. Escher – The Official Website
Escher 135 Jigsaw Puzzle by Rob Hans - Pixels Puzzles
Day & Night M.C. Escher 1000 Piece Puzzle Selegiochi B&W Italy | eBay
Vintage MC Escher Relativity Jigsaw Puzzle, 18 X 24 551 Pieces | eBay
My Selegiochi Escher collection 💙.As far as I can see there where 19 of these released.Mostly 1000 piece but a couple of 500s and one 3000. Still searching for the last five.