German historical postcard: "A high-altitude flight" Silhouette of a biplane against a background of clouds. Back side, Flak postmark, wwi

- Image ID: TANHMT
German historical postcard: "A high-altitude flight" Silhouette of a biplane against a background of clouds.  Back side, Flak postmark, wwi Stock Photo
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German historical postcard: "A high-altitude flight" Silhouette of a biplane against a background of clouds. Back side, Flak postmark, wwi
Max Right / Alamy Stock Photo
Image ID: TANHMT
Location: Bavaria, German Empire