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 109 Jigsaw Puzzle by Rob Hans - Pixels
M.C. Escher: Waterfall - 1000pc Jigsaw Puzzle By Buffalo Games (discon) - SeriousPuzzles.com
Rental- MC Escher Self-Portrait Puzzle - Conundrum House
Drawing Hands” Puzzle 1000 pieces – M.C. Escher – The Official Website
1000, Selegiochi, House of Stairs, Maurits Cornelis Escher - Rare Puzzles
Vintage MC Escher Relativity Jigsaw Puzzle, 18 X 24 551 Pieces | eBay