{"product_id":"poster-concave-convex","title":"Poster - Concave Convex","description":"Three-dimensional objects such as spheres \u0026amp; columns and cubes are often used in Escher's work as they can be viewed both as convex shapes and concave impressions.  On the left all elements are consistent with a viewpoint from above while those on the right are viewed from below.\u003cbr\u003ewidth 58cm height 47cm\u003cbr\u003e","brand":"Puzzling World","offers":[{"title":"Default Title","offer_id":44253140516952,"sku":"1145","price":25.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/9388\/1176\/files\/Concave-Convex-64cmW-x-47cmH.jpg?v=1781741850","url":"https:\/\/buykiwi.co.nz\/products\/poster-concave-convex","provider":"Buy Kiwi","version":"1.0","type":"link"}