Heinrich XIII Prince Reuss, 72, is accused of leading the plot, which would have led to him becoming Germany’s head of state.
Birgit Malsack-Winkemann, a former judge, attends the Frankfurt trial on Tuesday.
The former lawmaker allegedly led co-defendants around the Reichstag parliament to scout the site for a coup plot.
In addition to the five judges, two others will be on standby for the Frankfurt trial in the event of a long-term absence.
Malsack-Winkemann, an ex-lawmaker for the far-right Alternative for Germany (AfD) party, allegedly led several co-defendants around the Reichstag building scouting the location.
Persons:
Heinrich XIII Prince Reuss, Birgit Malsack, Frank, Walter Steinmeier, Kai Pfaffenbach, Maximilian Eder, Ruediger von Pescatore
Organizations:
CNN, Bundestag, Reuters, Frankfurt, Public
Locations:
Frankfurt, German, Stuttgart, Munich, Germany, Hesse