{"product_id":"great-britain-1840-paper-and-gum-trial-sgdp3a-24","title":"Great Britain 1840 paper and gum trial, SGDP3a","description":"\u003cp\u003eGreat Britain 1840 paper and gum trial, SGDP3a.\u003c\/p\u003e\n\u003cp\u003eA very fine example produced by Perkins Bacon for the forthcoming 1d black and 2d blue adhesives. Endorsed in manuscript \"og\" (ordinary gum), \"16lbs\" (Weight per ream) and \"Ca Po Mg\" (Chemicals added, Calcium, Potassium and Magnesium).\u003c\/p\u003e\n\u003cp\u003eA very fine example of these rare trials with full gum on reverse.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eA fascinating piece of history from the pre-dawn of the adhesive postage stamp reflecting the experimental work undertaken in preparation for the world's first adhesive postage stamp.\u003c\/p\u003e\n\u003cp\u003eAccompanied with a 2007 British Philatelic Association (BPA) Certificate of Authenticity.\u003c\/p\u003e\n\u003cp\u003eSG Catalogue Value: £5,000.\u003c\/p\u003e","brand":"Paul Fraser Collectibles","offers":[{"title":"Default Title","offer_id":45501765910753,"sku":"P10100047","price":700.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1645\/0221\/files\/RS6016.jpg?v=1721225273","url":"https:\/\/www.paulfrasercollectibles.com\/products\/great-britain-1840-paper-and-gum-trial-sgdp3a-24","provider":"Paul Fraser Collectibles","version":"1.0","type":"link"}