File:German naval code 1920s.agr.jpg

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German naval code 1920s

Summary[edit]

Description
English: German naval code 1920s, Document in the library of the National Cryptologic Museum in Maryland. The code book has lead lined covers to insure it would sink if thrown overboard,
Date
Source Own work
Author ArnoldReinhold
Permission
(Reusing this file)
Original document is from before 1923

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Date/TimeThumbnailDimensionsUserComment
current03:34, 20 September 2019Thumbnail for version as of 03:34, 20 September 20193,024 × 4,032 (5.82 MB)ArnoldReinhold (talk | contribs)User created page with UploadWizard

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