{"product_id":"60255","title":"Sperling, W., On the development and introduction of the first German ...","description":"\u003cp\u003eSperling, W., On the development and introduction of the first German registered mail machine, manuscript 8 pages, plus 4 original photos of old registered mail machines and other documents on this topic, including by U. Flachs, From the 'recommended' letter to the registered mail machine, from the 'Flachs' estate #60255\u003c\/p\u003e","brand":"philabooks","offers":[{"title":"Used","offer_id":49862146752829,"sku":"60255","price":20.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/7704\/0445\/files\/60255-00.jpg?v=1738326963","url":"https:\/\/philabooks.com\/en\/products\/60255","provider":"Philabooks","version":"1.0","type":"link"}