{"product_id":"karel-martens-birthday-calendar","title":"Karel Martens – Birthday Calendar","description":"\u003cp\u003e\u003cspan\u003eThe colorful, layered patterns in this A3 birthday calendar are based on a single shape punched out of colored card stock in multiple directions. A prototype of this design was created by Karel Martens in 1968, but not produced in a larger edition until now.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003e\n\u003cstrong\u003eDesigner:\u003c\/strong\u003e Karel Martens\u003cbr\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 297x420mm\u003cbr\u003e\u003cstrong\u003ePages:\u003c\/strong\u003e 14\u003cbr\u003e\u003cstrong\u003ePublication:\u003c\/strong\u003e 2026\u003cbr\u003e\u003cstrong\u003eBinding:\u003c\/strong\u003e Wire-O-Bound\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Counterprint","offers":[{"title":"Default Title","offer_id":56873609691516,"sku":null,"price":40.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1595\/5453\/files\/01_cfbc288b-6fc5-4acb-ab0d-f401bc0dcdae.png?v=1781301854","url":"https:\/\/www.counter-print.co.uk\/products\/karel-martens-birthday-calendar","provider":"Counterprint","version":"1.0","type":"link"}