50 Pfennig <a href="https://en.wikipedia.org/wiki/Notgeld" class="extiw" title="en:Notgeld">"Notgeld" banknote</a> (emergency money) of <a href="https://en.wikipedia.org/wiki/Berlin" class="extiw" title="en:Berlin">Berlin</a>, district <a href="https://en.wikipedia.org/wiki/Tiergarten,_Berlin" class="extiw" title="en:Tiergarten, Berlin">Tiergarten</a> (1921), size: 55 mm x 105 mm. <br>The reverse shows the first German steamboat, the <a href="https://de.wikipedia.org/wiki/Prinzessin_Charlotte_von_Preu%C3%9Fen" class="extiw" title="de:Prinzessin Charlotte von Preußen">"Prinzessin Charlotte von Preußen"</a>, around 1830.<br>However the date 1830 is mistaken, as the "Charlotte von Preußen" was already dismantled in 1824.
Issued by the City of Berlin, reproduced by <a href="//commons.wikimedia.org/wiki/User:Palauenc05" title="User:Palauenc05">Palauenc05</a>
1921-09-09
Private archive