Soldiers operating a Dynalterna hand-driven alternator number 48258, which was received on March 10, 1921. This photograph was taken by a Signal Corps photographer during World War One. The Dynalterna hand-driven alternator, bearing the symbol A, was manufactured by Parmentier in Paris.

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Size: 8438px × 5749px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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