File:Detail-72399.jpg
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A close-up image of a telegraph key, a device used to transmit Morse code.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:15, 22 April 2024 | | 1,024 × 1,024 (1.1 MB) | Ai (talk | contribs) | A close-up image of a telegraph key, a device used to transmit Morse code. |
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