A detailed engraving by Dominicus Custos depicting Johann Fernberger von Aur in full armour, set within an ornate architectural frame.

This engraving by Dominicus Custos depicts Johann Fernberger von Aur, a figure of the late sixteenth-century nobility. Custos, a Flemish printmaker who spent much of his career in Augsburg, was known for his technical precision in copperplate engraving. The portrait follows the conventions of the period, placing the subject within an elaborate architectural frame.

Fernberger stands in a niche, dressed in full armour, which signifies his military status. His posture is composed, with one hand resting on a baton and the other near his sword. At his feet lie his gauntlets and a plumed helmet, elements that reinforce the martial theme of the composition. The surrounding structure is heavily decorated with classical motifs, including Corinthian columns wrapped in relief carvings of putti and foliage. This framing device creates a sense of depth and theatricality, common in the portraiture of the era.

The work demonstrates the technical skill required to render different textures, from the polished metal of the breastplate to the soft shadows cast against the back of the niche. The cartouche at the base, containing the subject's name, is integrated into the architectural plinth, flanked by small figures that mirror the decorative style of the columns. As a printmaker, Custos was instrumental in disseminating the likenesses of contemporary figures across Europe, often working on large-scale projects that documented the nobility and intellectual circles of the Holy Roman Empire. This print serves as an example of the high level of detail and structural complexity achieved by printmakers during the transition from the late Renaissance to the Baroque period.