COULD YOUR PAINTING BE BY ANDRÉS MARZAL DE SAS?

Previously unknown works by important artists continue to emerge from private collections, estates, inheritances, and long-held family possessions. While authentic paintings by Andrés Marzal de Sas are exceptionally rare, every work deserves to be evaluated on its own merits rather than dismissed simply because it is unfamiliar or undocumented.

If you believe your Gothic panel painting may be by Andrés Marzal de Sas, obtaining an independent professional opinion is the appropriate first step.

We have specialized in the authentication of works attributed to Andrés Marzal de Sas since 2002. We issue Certificates of Authenticity (COAs), Authentication Reports, appraisals, valuations, provenance reports, and provide buying, selling, brokerage, and investment advisory services for collectors, attorneys, insurers, financial institutions, estates, museums, and private clients worldwide.

Getting started is straightforward. Simply send us photographs of the front and reverse of the panel, including details of the painted surface, gilding, inscriptions, edges, construction, labels, and any previous restoration, together with its dimensions and information regarding its history or ownership. After reviewing the material, we will recommend the most appropriate course of action.

AUTHENTICATION

Is this an Andrés Marzal de Sas?

From a single photograph of ordinary quality, we can often determine whether a panel appears broadly consistent with Marzal de Sas or clearly does not. His surviving oeuvre is limited and several attributions involve comparisons with closely related Valencian International Gothic painters, making careful examination particularly important.

What services do you provide?

We provide authentication, certification, Certificates of Authenticity (COAs), Authentication Reports, appraisals and valuations, provenance research, private sales and brokerage, investment advice, and analytical art market research.

Is it possible to discover a previously unknown Andrés Marzal de Sas today?

Yes. Many documented commissions by Marzal de Sas have not survived or have not been securely identified, and medieval panels can lose their original attribution when altarpieces are dismantled or dispersed.

Do I need to get my Andrés Marzal de Sas authenticated?

Yes. Authentication is essential if you wish to sell a work attributed to Marzal de Sas for its full market value. It is also important for insurance, estate planning, charitable donations, financing, and many legal purposes.

Is it complicated to get an Andrés Marzal de Sas authenticated?

Not for you. Send us clear photographs of the front and reverse, panel edges, gilding, painted surface, inscriptions, labels, joins, and construction details, together with the dimensions and anything known about the work’s history. The investigation itself is our responsibility.

How long does it take to authenticate an Andrés Marzal de Sas?

It depends on how much is already known about the panel when we begin the investigation. In straightforward cases, significant conclusions may be reached within a couple of weeks; more complex medieval attribution cases may require several months.

How much does it cost to authenticate an Andrés Marzal de Sas?

From the low hundreds to the high thousands. It depends on how much is already known and documented, where relevant records are located, and whether travel or scientific testing is required.

Can a signature alone prove that an Andrés Marzal de Sas painting is authentic?

No. For a painting of this period, attribution depends far more heavily on materials, panel construction, technique, underdrawing, gilding, stylistic comparison, provenance, and historical documentation than on a signature.

Can an unsigned Andrés Marzal de Sas painting still be authentic?

Yes. An unsigned medieval panel can certainly be authentic. Attribution to Marzal de Sas must be established through the combined evidence of technique, materials, construction, style, provenance, and comparison with securely attributed works.

What documents help authenticate an Andrés Marzal de Sas painting?

Any document that mentions, describes, illustrates, or traces the panel may assist authentication. Old photographs, collection inventories, invoices, restoration records, exhibition catalogues, scholarly references, insurance documents, auction records, and family papers can all contribute valuable evidence.

Can an Andrés Marzal de Sas painting be authenticated from photographs?

Yes. High-quality photographs are extremely useful for examining composition, surface, gilding, panel construction, inscriptions, restoration, and other characteristics remotely. When necessary, we may recommend an in-person examination.

Is it always necessary to perform scientific analyses of an Andrés Marzal de Sas painting?

No. Research, provenance, stylistic comparison, and technical examination may already provide substantial evidence. In difficult cases, pigment analysis, infrared imaging, X-radiography, dendrochronology, or examination of the ground and gilding may help establish whether the materials and construction are compatible with a Valencian panel of around 1400.

What if my Andrés Marzal de Sas painting has no provenance?

Incomplete provenance is common with medieval paintings. When documentation is missing, greater weight must be placed on panel construction, materials, technique, stylistic evidence, condition, and scientific examination where appropriate.

Do you issue Certificates of Authenticity for Andrés Marzal de Sas works?

Yes. Upon completion of the authentication, we issue a Certificate of Authenticity (COA) together with a detailed and fully referenced Authentication Report.

APPRAISALS & VALUATIONS

How much is my Andrés Marzal de Sas painting worth?

We will appraise your painting and determine its value. Attribution, subject, date, dimensions, condition, provenance, degree of surviving original paint and gilding, historical importance, and rarity are particularly significant for a medieval panel of this type.

SELLING

Can you sell my Andrés Marzal de Sas for me?

Yes. We specialize in private sales but use every appropriate selling method to obtain the highest possible net price. We manage the process professionally, confidentially, and on your behalf.

Do I need an appraisal before selling my Andrés Marzal de Sas?

Yes. Your painting should be priced correctly for the country, market, attribution, and method of sale. An independent appraisal helps prevent both underpricing and overpricing.

Do I need authentication before selling my Andrés Marzal de Sas?

Yes. With an exceptionally rare medieval attribution, the distinction between a work by Marzal de Sas, his circle, workshop, school, or another contemporary painter can have a major effect on market value.

Can you help me maximize the selling price of my Andrés Marzal de Sas?

Yes. Authentication, provenance, condition, scholarly documentation, valuation, timing, presentation, and the chosen sales method can all influence the final result.

Should I restore my Andrés Marzal de Sas before selling it?

Usually not. Medieval panels require especially cautious conservation, and unnecessary intervention can affect both historical evidence and value. We generally recommend leaving the work in its present condition unless there is a compelling conservation reason to intervene.

How long does it take to sell an Andrés Marzal de Sas?

Higher-value medieval paintings generally require more time to sell because there are fewer qualified buyers. Strong attribution, documentation, appropriate pricing, and the right sales method all contribute to a successful sale.

BUYING & ADVISORY

Should I buy an Andrés Marzal de Sas?

If you appreciate International Gothic painting, certainly. If your primary objective is investment, we can evaluate the proposed attribution, condition, provenance, price, and alternative opportunities.

Can you review an Andrés Marzal de Sas before I buy it?

Yes. We provide independent pre-purchase research and analysis for collectors and investors. We also prepare predictive art market forecasts and Buy-Hold-Sell recommendations.

What should I check before buying an Andrés Marzal de Sas?

Three fundamental questions should always be answered: Is the attribution credible? What is the condition? Is the price reasonable? For a medieval panel, construction, gilding, restoration history, provenance, and whether the attribution is to Marzal himself, his circle, workshop, or school are especially important.

How can I avoid buying a fake Andrés Marzal de Sas?

Call us before you buy. An independent review before completing the purchase is one of the simplest ways to reduce the risk of acquiring a later imitation, heavily altered panel, or incorrectly attributed work.

Can you advise me on building a collection?

Yes. We advise collectors on the financial aspects of acquisition, ownership, collection management, and eventual sale.

REQUEST AN ANDRÉS MARZAL DE SAS AUTHENTICATION OR APPRAISAL

Whether you require authentication, a Certificate of Authenticity, an appraisal, valuation, provenance research, buying advice, selling assistance, brokerage, or investment guidance regarding a work attributed to Andrés Marzal de Sas, our specialists are available to assist.

Complete the contact form below or call us at +1 (212) 658-0466 to discuss your work with one of our experts.