Oppenheim worked for the type foundry Berthold and created a handful of significant and widespread typefaces, all of which share modernist characteristics, such as Lo-Type and Fanfare which are still in wide use today. Also, he designed the first coin of the Weimar Republic in 1919.
Oppenheim worked for the type foundry Berthold and created a number of significant typeface designs that are characterized by modernism, such as Lo-Type and Fanfare, which remain popular today. He also designed the first coin of the Weimar Republic in 1919.