Stamps generic certificates from The Philatelic Foundation, PSE, or the APS are accepted. NOTE "graded" certificates or "encased" items are not accepted. Proof of inability of a competent authority to express an opinion are not grounds for return. We use premium and secure packaging to better protect your items.We appreciate your continued business! The item "#C13 F-VF ON FIRST FLIGHT PPC LAKEHURST 5/10/1930 PAN-AM LZ127 ZEPPELIN BU6418" is in sale since Sunday, December 23, 2018. This item is in the category "Stamps\United States\Covers\Event Covers\First Flight". The seller is "billsbargainstamps" and is located in New Milford, New Jersey. This item can be shipped worldwide.