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1989, Germany, 50th Anniversary 1st successful stratosphere balloon
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Cover Honors 50th Anniversary of First Stratospheric Balloon Flight
On May 27, 1931, physicist and inventor Auguste Piccard and his assistant Paul Kipfer took off from Augsburg, Germany in a balloon Piccard and his brother Jean had designed. The 500,000-cubic-foot hydrogen balloon was attached to a spherical aluminum pressure cabin. In this balloon, Auguste and Kipfer reached an altitude of almost 10 miles, becoming the first humans to enter the stratosphere (the second layer of the Earth's atmosphere. This cover is part of the Milestones of Flight Commemorative Series and will make a great addition to your aviation collection.
Cover Honors 50th Anniversary of First Stratospheric Balloon Flight
On May 27, 1931, physicist and inventor Auguste Piccard and his assistant Paul Kipfer took off from Augsburg, Germany in a balloon Piccard and his brother Jean had designed. The 500,000-cubic-foot hydrogen balloon was attached to a spherical aluminum pressure cabin. In this balloon, Auguste and Kipfer reached an altitude of almost 10 miles, becoming the first humans to enter the stratosphere (the second layer of the Earth's atmosphere. This cover is part of the Milestones of Flight Commemorative Series and will make a great addition to your aviation collection.
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