{"product_id":"zener-cards","title":"Zener Cards","description":"\u003cp\u003eMysteries of the Unknown Zener cards from Time-Life Books. Used to test extrasensory perception (ESP), popularised by J.B. Rhine and perceptual psychologist Karl Zener in the 1930s.\u003c\/p\u003e\n\u003cp\u003eCirca 1980s. \u003c\/p\u003e\n\u003cp\u003eBox has some edge wear and general wear from use, cards are bright and fine condition. \u003c\/p\u003e","brand":"Fool's Journey Books","offers":[{"title":"Default Title","offer_id":57186625585417,"sku":null,"price":60.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0932\/3302\/1193\/files\/IMG_1183.jpg?v=1783527112","url":"https:\/\/foolsjourneybooks.com\/products\/zener-cards","provider":"Fool's Journey Books","version":"1.0","type":"link"}