{"product_id":"gagb-chelsea-colour-filter-1958","title":"GAGB Chelsea Colour Filter 1958","description":"\u003cp class=\"p1\"\u003e\u003ci\u003eThe Journal of Gemmology (1958)\u003c\/i\u003e contains an advertisement listing a “NEW Style Chelsea Colour Filter” in a plastic moulding — and mentions pricing — showing that by the late 1950s, Gem-A was offering variations of the filter in different mountings.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThis is a museum archives and no unit is available for sale at this moment. \u003c\/span\u003e\u003c\/p\u003e","brand":"Gems.studio","offers":[{"title":"Default Title","offer_id":51520975634752,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/0397\/2672\/files\/GAGB1958_1.gif?v=1770678703","url":"https:\/\/gems.studio\/products\/gagb-chelsea-colour-filter-1958","provider":"Gems.studio","version":"1.0","type":"link"}