TT Commons is part of Weltgeister’s visual identity.
Weltgeister is a combination of literary events across Stuttgart, Germany that were supposed to happen throughout the year in 2020 celebrating the 250th anniversary of Georg Wilhelm Friedrich Hegel and Friedrich Hölderlin. In 1770, the two intellectual giants were born in Stuttgart and nearby Lauffen am Neckar, respectively. They were closely connected with the city of Stuttgart during their lifetime and in their work.
Unfortunately, these special tours had to be canceled due to corona. They were rescheduled for summer and fall 2021. The accompanying serif appears to be Adobe Caslon.