About Us

In 1994, Gabriela and Mathieu Sismann opened their first stand at the Puces de Saint-Ouen. In 1995, they founded their gallery in Paris. From the Louvre des Antiquaires to the prestigious Quai Voltaire, over the course of their thirty-year career, they forged their reputation as leaders in the international market for ancient sculpture, and became a reference point for clients, amateurs and professionals alike, who were committed to this niche field. Located opposite the Pavillon Flore, where the couple met on the benches of the Ecole du Louvre, Galerie Sismann is now a unique venue devoted indiscriminately to European sculpture from the Middle Ages, the Renaissance, the Classical and Baroque periods through to the end of the 18th century.

Our Approach

Galerie Sismann is distinguished primarily by its ability to bring to light forgotten masterpieces of Old Master Sculpture from the art market or private collections. Driven by their sensitivity, their solid knowledge and an unrivalled eye, Gabriela and Mathieu see their choice of acquisitions as a quest for rare, little-known and neglected works, and set themselves the task of recontextualising them, finding their authors and original purpose.
Research is at the heart of this approach. This research is carried out in a collegial manner within the Gallery, drawing on the couple's specialist library as well as institutional documentary resources and online databases. The conclusions drawn from these studies are validated upstream by an international network of specialist consultants from the academic and museum worlds, and eventually published.

The Team

Gabriela Sismann

Born in the United States and raised in Canada, Gabriela Sismann spent her teenage years in Argentina before moving to France in 1991 to study at the École du Louvre and the Sorbonne from where shes graduated as an Art Historian specializing in Italian sculpture. In 1994, she and her husband Mathieu set up the Galerie Sismann. Alongside her work as an antique dealer and Art Historian, Gabriela is also a designer of "wearable works of art" and an active supporter of contemporary creation and philanthropic ventures.

Mathieu Sismann

Having inherited his father's passion for collecting, Mathieu Sismann, already an inveterate Art hunter, received a dual education in law and art history. He specialised in early European sculpture at the Ecole du Louvre and after five years as a trainee auctioneer, he and his wife Gabriela set up Galerie Sismann in 1994. Mathieu is an expert in Old Master Sculpture and a member of the CNES.

Manon Lequio

A graduate of the École du Louvre and the Sorbonne, Manon Lequio specialises in medieval art. She worked for seven years in the conservation departments of a number of major institutions, including the Musée de Louvre, the Musée des Augustins and the Musée de Cluny. In 2019, Manon joins Gabriela and Mathieu as a collaborator and at the same time she continues to teach Medieval and Renaissance works of art at the École du Louvre.

Our Services

Acquisition and sale

For thirty years, Galerie Sismann has been helping amateurs and institutions to build up their sculpture collections according to their tastes and needs. Thanks to their knowledge and experience of the Art Market and their network of specialists, Gabriela and Mathieu can guarantee their clients the authenticity, value and provenance of the works they offer for sale. Galerie Sismann also advises private individuals on the sale of Old Master Sculpture and Works of Art.

Advice and valorization

Aspiring to share their passion for ancient sculpture and the intellectual and emotional pleasures that accompany the formation of a collection, Gabriela and Mathieu offer their advice on the acquisition, conservation and presentation of Old Master Sculpture. Aspiring to share their passion for ancient sculpture and the intellectual and emotional pleasures that accompany the formation of a collection, Gabriela and Mathieu offer their advice on the acquisition, conservation and presentation of Old Master Sculpture.

Expertise and Valuation

As an expert in Old Master Sculpture and a member of the SNA and the CNES, Mathieu Sismann is authorised to appraise sculptures for public auctions, commercial transactions, insurance contracts and estate inventories. In addition to its main activity, the Galerie Sismann also offers expert appraisal services for Old Master Sculpture dating from the Middle Ages to the end of the 18th century.

International recognition :

Galerie Sismann regularly organises thematic exhibitions and takes part in international fairs such as TEFAF, BRAFA, BIENNALE PARIS, BIAF, FINE ARTS PARIS, FAB PARIS, MASTERPIECE LONDON, FRIEZE MASTERS LONDON...

Some of their discoveries can be found in major private art collections as well as in renowned institutions such as the Musée du Louvre (Paris), the Musée National du Moyen Âge (Paris), the Metropolitan Museum of Art (New York), the Rijksmuseum ( Amsterdam), the Musée National de la Renaissance (Ecouen), the Palais des Beaux-Arts de Lille, the Musée des Beaux-Arts de Strasbourg, the Fondation Lambert (Avignon), the Tassenmuseum (Amsterdam), the Katoen Natie Art Foundation (Antwerp), the Palais Fesch - Musée de Beaux-Arts (Ajaccio), the Munich Residence Museum (Munich), the Fondation Gandur pour l'Art (Geneva), the Alana Collection, the Musée des Arts Décoratifs de Namur, the Palazzo Ducale (Mantua), the Château de Lunéville, the Musée Sainte-Croix de Poitiers...

For thirty years, Galerie Sismann has been helping art lovers and institutions to build up their collections. They have won the trust of prestigious institutions and major collectors throughout the world.