Scott #C13-15: 1930 Graf Zeppelins. Centering & Condition: Used. C13-14 are XF while the C15 is Near Very Fine. Reverse (Gum Side): N/A. Faults / Imperfections: None. The item pictured is the actual item you are purchasing, unless otherwise noted. I also offer an interest-free layaway plan. Ask me about it! About Getting This Stamp Expertized. Reperfed and Regummed Stamps. My Professional Service To Sell Your Stamps. Some of My 65,000+ Feedback Comments. Websites You Should Visit Stamp Collectors Against Dodgy Sellers. The item “U. S. #C13-15 CHOICE Used Set 1930 Graf Zeppelins” is in sale since Friday, May 06, 2016. This item is in the category “Stamps\United States\Back of Book\Air Mail”. The seller is “gsquared7″ and is located in Ankeny, Iowa. This item can be shipped worldwide.