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 "LIECHTENSTEIN #C8 1931 ZEPPELIN FLIGHT COVER TO NEW YORK XF BR9594" is in sale since Saturday, February 7, 2015. This item is in the category "Stamps\Europe\Liechtenstein". The seller is "billsbargainstamps" and is located in New Milford, New Jersey. This item can be shipped worldwide.