| Morse Code Alphabet and Punctuation, Illustration from an Educational Poster in Hungarian, Printed in Ravensburg, Germany, Late 19th Century(Morse code alphabet and punctuation, illustration from an educational poster in Hungarian, printed in Ravensburg, Germany, late 19th century )German School | 
| € 117.5 
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| Undated                                                                 ·  colour lithograph
                                                                 ·  Picture ID: 418642 american · telegraph · electricty · communication · dots · dashes · dash · machinery · technology · apparatus · letters · letter · battery · batteries · Private Collection / Bridgeman Images | 
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