Mongolia #2139 1st Zeppelin Hologram - 1993 Mint Sheet of 4

In 1929 the Graf Zeppelin passed over Mongolia on its historic Round-the-World flight. The holographic 3-D image on this stamp shows the airship soaring over Ulan Bator where it surely must have surprised the inhabitants of this rural nation. Mongolia's first hologram stamp is presented in a sheet of 4 with a margin picturing hot air balloons over a rural landscape. (Mongolia #2139)