An image of a German amplifier and filter taken on November 28, 1919. This photograph was captured by Sergeant Gallivan. It is part of the collection from the Research and Inspection Division in Paris, France. The image was released by the censor on January 7, 1919.

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Size: 8476px × 5726px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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