Triton and a Nereid (Design for an Oval Relief or Dish)
Drawing on paper • Attributed to Guglielmo della Porta (Italian, c. 1500–1577), or workshop of Perino del Vaga.

Style & Movement
Late Mannerism (Cinquecento)
Medium & Technique
Pen and brown ink with gray and brown wash, heightened with white gouache over black chalk or graphite on prepared paper.
Creation Period
Late 16th century, circa 1570-1590
Dimensions & Format
Approximately 15 x 20 cm; Oval (Tondo/Oval format study)
Subject Description
The composition depicts a Triton and a Nereid within an oval frame. The figure on the left is a muscular Triton holding a large cornucopia filled with fruit, symbolizing abundance. To the right, a Nereid or sea nymph is partially seen, turning toward the center. The figures are rendered with the characteristic muscular tension and elegant contortions of the Mannerist period, likely acting as a preparatory study for a metalwork relief or a ceramic maiolica design.
Condition & Value Assessment
Condition Assessment
Fair to Good; The paper displays significant age-related toning, surface dirt, and some historical moisture staining.
Estimated Market Value
$4,000 - $7,000 USD
Auction Estimate
$3,500 - $5,500 USD
Provenance History
Likely originated from a private collection of Old Master drawings in Europe; the gold-toned border suggests it was once part of a collector's album or mounted for historical display in the 18th or 19th century.
Art Historical Significance
This drawing is a significant example of the intersection between fine art design and decorative arts in 16th-century Italy. It reflects the influence of the 'Bella Maniera' and specifically the workshop practices of followers of Michelangelo and Perino del Vaga, who designed functional objects (like the famous 'Cassetta Farnese') with the same rigor as monumental frescoes.
Notable Features
The use of white gouache heightening creates a strong sculptural effect (chiaroscuro), which supports the theory that this was a design for a three-dimensional object. The gold leaf or paint on the outer rim indicates a high-status collector’s mount from the neoclassical era.
Condition Issues
Visible foxing, paper oxidation (yellowing), edge wear, a small loss at the top center edge, and old adhesive residues on the reverse are likely. The white heightening has slightly oxidized or faded in certain passages.
Conservation Recommendations
Professional cleaning by a paper conservator to reduce acidity; de-acidification treatment; mounting with archival, acid-free materials; and protection from UV light to prevent further fading of the ink and wash.