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.
Escher puzzel | Milledoni - Spot on gifts
Escher 117 Jigsaw Puzzle by Rob Hans - Pixels
Vintage MC Escher Relativity Jigsaw Puzzle, 18 X 24 551 Pieces | eBay