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.
House of Stairs” Puzzle 1000 pieces – M.C. Escher – The Official Website
Sealed M. C. Escher Drawing Hands Puzzle 1000 Pieces - Etsy Finland
Drawing Hands” Puzzle 1000 pieces – M.C. Escher – The Official Website
1000, Selegiochi, House of Stairs, Maurits Cornelis Escher - Rare Puzzles
MC Escher: Day and Night - 1000 Teile - PUZZELMAN Puzzle online kaufen