The Weiss Gallery, a distinguished institution in Old Master portraiture, specializes in Tudor, Stuart, and Northern European works. Situated on Jermyn Street, it offers a meticulously curated collection from the 15th to 18th centuries. The gallery's commitment to scholarly research and publications enriches the understanding of historical portraiture for connoisseurs and scholars.

Tomasso, founded in 1993 by brothers Dino and Raffaello Tomasso, is a premier gallery in Leeds, renowned for its expertise in European Sculpture, Master Paintings, and Ancient Art. Celebrated for its Renaissance bronzes, Tomasso supports cultural institutions through sponsorships and loans, enhancing the global art dialogue with pivotal exhibitions.

Lullo Pampoulides Gallery excels in Old Master paintings, showcasing historically significant works, particularly from the Baroque era. Its exhibitions, such as "Drama, Power and Seduction," highlight the period's dramatic intensity and technical mastery. The gallery fosters scholarly discourse and serves as a key destination for discerning collectors and art connoisseurs.

The Koetser Gallery, a premier institution in Zurich, specializes in Old Master Paintings, particularly from the Northern Renaissance and Dutch Golden Age. Under David H. Koetser's stewardship, it exemplifies connoisseurship, offering a curated collection and comprehensive advisory services, solidifying its influence in the Old Masters market and art historical discourse.

Johnny Van Haeften Gallery excels in Old Master Paintings, focusing on 17th-century Dutch and Flemish masterpieces. With a commitment to scholarly rigor, it showcases works by luminaries like Claude Lorrain and Pieter Claesz. The gallery enriches art historical discourse through publications and advisory services, serving collectors and institutions alike.

Richard Green, a distinguished Mayfair institution since 1955, excels in curating fine paintings from the 17th to 21st centuries. With a focus on Old Masters, Impressionists, Modern British art, and contemporary sculpture, the gallery offers expert guidance, ensuring rigorous provenance and scholarly context for collectors, enhancing global art market significance.

De Jonckheere Gallery epitomizes excellence in Old Master paintings, focusing on 16th and 17th-century Flemish and Dutch art. Showcasing luminaries like Brueghel and Teniers, their exhibitions provide profound insights into historical genres. Active in global art fairs, the gallery enhances accessibility through publications and virtual tours, fostering engagement among collectors and enthusiasts.

Colnaghi, the world's first commercial art gallery, established in 1760, exemplifies excellence in art curation. With locations in London, New York, Madrid, and Brussels, it specializes in Old Masters and antiquities. Its exhibitions, such as "Northern Lights" and "Dreams and Journeys," reflect a profound commitment to art scholarship and preservation.

Didier Aaron Gallery, established in 1923, epitomizes excellence in Old Master and 19th-century art. With locations in Paris, New York, and London, it serves a discerning clientele, including esteemed museums. Its rigorous connoisseurship is evident in curated exhibitions and participation in elite art fairs, solidifying its status as a premier resource.