Photograph showcasing an interphone unit battery box used during World War One. Issued in February 1918, it is part of the SCR 57 equipment. The image was taken on an unknown date and is not intended for publication. Laboratory notes indicate the photo's identification number as 04452.

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Size: 7981px × 6301px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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