This is Steigbild X by Katharina Sieverding from Three: The Triptych in Modern Art, an excellent exhibit I checked out a few months at the Kunstmuseum Stuttgart. 60 triptychs are featured in the exhibit, including works by Max Beckmann, Francis Bacon, and one of my personal favorites, Otto Dix. Absolutely worth a visit if you’re passing through Stuttgart between now and 14-June. [Getting there]
A few more:
Detail from Argonaulen by Max Beckmann, and
this detail from GrossStadt by Otto Dix.
I snapped 22 pics from the exhibit which are here.