{"product_id":"9780906290262","title":"Hallmark: A History of the London Assay Office","description":"Testing articles made of precious metals and stamping them with hallmarks to indicate that they are of a minimum standard of purity has been the work of The Worshipful Company of Goldsmiths for seven centuries. The history of the London Assay Office is a tale of royal greed, forgery and counterfeiting, plague, war and fluctuating fortunes and it is brought vividly to life in this book.  ","brand":"Unicorn Press, London","offers":[{"title":"Default Title","offer_id":47009474969840,"sku":"9780906290262","price":55.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9780906290262_p0.gif?v=1763861482","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780906290262","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}