Keywords: Graf Zeppelin Plate Blk 65c 1930 issue.JPG en Image of 65-cent Graf Zeppelin plate block 1930 U S Post Office Bureau of Engraving and Printing; Imaging by Gwillhickers PD-USGov Uploaded with UploadWizard Green stamps Stamps of the United States 1921-1930 Airmail stamps of the United States |