<a href="https://en.wikipedia.org/wiki/Notgeld" class="extiw" title="en:Notgeld">"Notgeld" banknote</a> of <a href="//commons.wikimedia.org/wiki/Bonn" title="Bonn">Bonn</a>, 1923: 20 million Mark, size: 95 mm x 148 mm.
Issued by the City of Bonn (1923), reproduced from an original banknote by <a href="//commons.wikimedia.org/wiki/User:Palauenc05" title="User:Palauenc05">Palauenc05</a>
1923-09-10
Private archive