WWI German Biplane Reconaissance Plane Clouds (Unique Vintage Glass Plate Negative 1910s)

ultra rare original historical glass plate negative measuring approximately 12 x 9 cm. this is a unique one of a kind photographic master record from world war i, showing a german military parseval-sigsfeld type observation balloon floating in the air.
the balloon clearly displays the imperial german army balkenkreuz insignia on its envelope. the observer basket is visible hanging suspended underneath the structural rigging.
features hand-inked archival inventory numbers 926 at the bottom right corner and markings on the top edge from its original military documentation.

size: ~ 12 x 9 cm (1 cm ~ 0.39 inch)

condition: very good...minor paper residue on glass plate....please also refer to scans which show complete glass plate

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