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.
Vintage MC Escher Jigsaw Puzzle Still Life and Street Gallins - Etsy Denmark
M.C. Escher Shapes Jigsaw Puzzle | Mc escher, Idee per disegnare, Disegnare animali
Escher 47 Jigsaw Puzzle by Rob Hans - Fine Art America
Convex Concave” Puzzle 1000 pieces – M.C. Escher – The Official Website