65c - $2.60 Graf Zeppelin, Large Die Proofs on Wove Paper (C13aP-C15aP).
The Set, in Handsome, Black Leather Presentation Album, with dedication to Dr. Hugo Eckener by Walter F. Brown, Postmaster General, affirming it to be printed from the original dies. Each with autographed note by Dr. Eckener. A Magnificent Unique Series, One of the Most Outstanding of all modern Postal History Pieces
Image Magnifier / Download
Power Search for Comparables