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.
Drawing Hands” Puzzle 1000 pieces – M.C. Escher – The Official Website
MC Escher BELVEDERE Puzzle 1000 Piece Jigsaw by Buffalo Games, Poster Included | eBay
1000 piece puzzle, "Bond of Union" by M.C. Escher, Selegio… | Flickr
Waterfall” Puzzle 1000 pieces – M.C. Escher – The Official Website