Appraisal Request - GB'S PARIS
GB'S
PARIS

Art & Antiquities from the Americas

Appraisal of Ancient Artifacts
or Collection Inventory

INDEPENDENT EXPERTISE • SCIENTIFIC AUTHENTICATION

Your collection carries deep personal and cultural significance. Handed down through generations, these objects often hold profound emotional value while also representing important market, historical, and cultural worth.

Having an ancient artifact from the Americas professionally appraised — whether a pre-Columbian sculpture, ritual ceramic, jade carving, ancient textile, or colonial furniture — allows for a rigorous assessment of its authenticity, value, and historical context, while revealing the layers of its story within the major civilizations of Mesoamerica and the Andes.

The Expert’s Role in Art and Antiquities of the Americas

In the world of auction houses, museums, and private collectors, the appraisal of an ancient object requires both scholarly knowledge and highly specialized expertise. While the auctioneer serves as the recognized generalist for valuation, rare or particularly complex pieces from American civilizations call for the dedicated insight of an expert trained in archaeology, art history, and anthropology.

The Expert’s Role

Guillaume Bresso embodies this excellence. With a PhD in Anthropology and Art History, he combines advanced academic training, extensive fieldwork in Mexico (Oaxaca, Palenque, Campeche), and a unique practice of reproducing ancient works for scientific purposes. Co-founder of the Ateliers Leonis, he masters the gestures, techniques, and materials of ancient artists, giving him exceptional ability to detect even the most sophisticated forgeries.

His research focuses on the cosmogony, rituals, and symbolism of Mesoamerican cultures (Maya, Mixtec, Olmec, Chupícuaro, Colima, Teotihuacan, Jaina…) as well as Mesopotamian, and tribal art. Author of numerous scientific publications and reference works, he brings a rare multidisciplinary perspective to each appraisal: iconographic analysis, technical study, archaeological contextualization, and interpretation of scientific reports (thermoluminescence and OSL).

Your Expertise Request

Object Details

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Independent Expert Status

In France, the title of “expert” is not legally protected. Quality is ensured by academic rigor, extensive field experience, and intellectual independence. As an independent expert, Guillaume Bresso brings this rare level of excellence to the service of the most discerning collectors and prestigious institutions.

Why Commission an Appraisal?

Whether for an auction sale, insurance, estate planning, donation, or patrimonial inventory, a scientific and documented appraisal is essential. It not only establishes the real market value of the work on the international market but also reveals its deep cultural and historical significance.

A certificate of authenticity issued by a recognized specialist constitutes a key legal and scientific document, valuable for private collectors as well as institutions and tax authorities.

How Does an Appraisal Work?

The appraisal process follows a rigorous, multidisciplinary protocol. Each step is documented in the certificate of authenticity:

  • Precise description of the object’s nature and cultural origin
  • Identification of style, period, and archaeological context
  • Analysis of materials, manufacturing techniques, and tool marks
  • In-depth iconographic and symbolic study
  • Detailed examination of condition and any ancient restorations
  • High-quality photographic documentation and dimensional records

Following these investigations, the expert determines the current market value and issues a certificate of authenticity that engages both his scientific and ethical responsibility.

Cost of Appraisal / Inventory

Fees are established by personalized quote, depending on the nature, complexity, and level of investigation required for the object.

We are at your disposal for any further information.

Any Questions?

We remain at your disposal for any inquiry regarding the appraisal of your artifacts or collection.

Contact us

© GB'S PARIS — Art & Antiquities from the Americas • Scientific Expertise and Authentication