{"product_id":"lot-320-april-29-2026","title":"Lot 320 United States (C) 1959 Antarctic, A Very Fine Used Cover, 6c Postal Stationary Envelope Surcharged 1c, Addressed To A Member of the US Research Project At Antarctica, Pen Notation Reads 'Not USARP' \u0026 Stamped Return to Writer.","description":"\u003cp\u003eA very fine used cover,1959 Antarctic, 6c postal stationary envelope surcharged 1c, addressed to a member of the US research project at Antarctica, pen notation reads 'not USARP' \u0026amp; stamped return to writer. \u003c\/p\u003e\n\n\u003cp\u003eUnknown checked…backstamp, indicating it was returned January 8 1960, a week after it was mailed.\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":"26","offers":[{"title":"Default Title","offer_id":56956883959968,"sku":"Lot-320-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_320_COMP_397c6567-caca-4004-86db-e234317035a6.jpg?v=1777074350","url":"https:\/\/brixtonchrome.com\/products\/lot-320-april-29-2026","provider":"Brixton Chrome","version":"1.0","type":"link"}