Ex libris Willibald Pirckheimer

The print features the dual coats of arms of Pirckheimer and his wife, Felicitas Rieter, supported by two large winged putti. The left shield displays a birch tree (a pun on the name Pirckheimer), while the right depicts a crowned siren with two tails, all surmounted by a crested helmet and decorative garlands. At the bottom, smaller winged figures engage in a playful mock battle below an inscription of the owner's name.

Willibald Pirckheimer was a central figure in Northern Humanism and a close associate of Dürer, serving as a key conduit for Neoplatonic and Hermetic ideas from Italy to Germany. This bookplate marked a library that housed essential esoteric and classical texts, including Pirckheimer's own Latin translation of Horapollo's Hieroglyphica.