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-C15 GRAF ZEPPELIN COMPLETE SET VF-XF OG NH WLM6593 GPC18" is in sale since Monday, August 27, 2018.This item is in the category "Stamps\United States\Back of Book\Air Mail". The seller is "billsbargainstamps" and is located in New Milford, New Jersey. This item can be shipped worldwide.