They are all attached to a flown cover. They are genuine and all original.
In excellent condition as well as the cover. Superb piece to add to any collection, a true piece of history. Very rare to have all three on a flown cover. #C13-15 SET ON A Flown Cover 1930 Graf Zeppelin Set MINT" is in sale since Friday, July 12, 2019. This item is in the category "Stamps\United States\Back of Book\Air Mail".
The seller is "bargainclothing" and is located in Yaphank, New York. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Sweden, Indonesia, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Bahrain, Croatia, Malaysia, Colombia, Panama, Egypt, Iceland, Martinique, Peru, Paraguay, Viet nam, Uruguay.