Stamps described with faults are NOT returnable. Stamps generic certificates from The Philatelic Foundation, PSE, or the APS are accepted. NOTE "graded" certificates or "encased" items are not accepted. Proof of the inability of a competent authority to express an opinion is not grounds for return.We use the finest in secure packaging to better protect your items. The item "RARE DOX FLIGHT COVER JANUARY 30, 1931 GREAT BRITAIN TO KANSAS HV1232" is in sale since Sunday, March 04, 2012. This item is in the category "Stamps\United States\Covers\Event Covers\Other US Event Stamp Covers". The seller is "billsbargainstamps" and is located in New Milford, New Jersey. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia.