1000, Selegiochi, Concave and Convex, Escher - Rare Puzzles
Vintage M.C. Escher Relativity Puzzle SEALED NEW by Applestreet | eBay
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.