Declamation of the Philosopher, Physician, and Orator

A detailed woodcut printer's mark features a central tree with a shield hanging from its trunk. The shield bears the initials "T K" above a cross-like monogram. The shield is flanked by two unicorns standing on their hind legs, facing each other. The entire scene is enclosed in an ornate, floral, and leafy border. At the bottom, on a scroll, is the name "THIELMAN KERVER."