{"product_id":"lot-317-april-29-2026","title":"Lot 317 Argentina (C) 1975 Base Brown Antarctic Tourist Expedition, A Very Fine Used Cover, Sent From Base Brown On Christmas Day 1975, Appropriate Cachets On Front \u0026 Back, Nov. 1976 Buenos Aires Receiving Backstamp.","description":"\u003cp\u003eA very fine used cover from the 1975 Base Brown Antarctic Tourist Expedition, sent from Base Brown on Christmas day 1975, appropriate cachets on front \u0026amp; back, Nov. 1976 Buenos Aires receiving backstamp. \u003c\/p\u003e\n\n\u003cp\u003eScott doesn't list this variety, so we estimate it at $15. The stamp offered here grades 75 as follows:\u003c\/p\u003e\n\n\u003cp\u003eCentering\/Margins: 35\/60\u003c\/p\u003e\n\n\u003cp\u003ePaper Freshness: 5\/5\u003c\/p\u003e\n\n\u003cp\u003eColour: 5\/5\u003c\/p\u003e\n\n\u003cp\u003eImpression: 5\/5\u003c\/p\u003e\n\n\u003cp\u003eAbsence of Visible Paper Flaws: 5\/5\u003c\/p\u003e\n\n\u003cp\u003ePerforations: 10\/10\u003c\/p\u003e\n\n\u003cp\u003eCancellation: 10\/10\u003c\/p\u003e","brand":"1.2","offers":[{"title":"Default Title","offer_id":56956883861664,"sku":"Lot-317-April-29-2026","price":15.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/7716\/9506\/files\/20260429_317_COMP_5146ae48-d854-4a9d-807a-91207f35ace6.jpg?v=1777074344","url":"https:\/\/brixtonchrome.com\/products\/lot-317-april-29-2026","provider":"Brixton Chrome","version":"1.0","type":"link"}