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Signature offers an exclusive art authentication service for collectors. 

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specialist authenticating art

Signature is a premier fine art authentication and provenance research organization, bringing together a global network of art authentication experts to provide comprehensive and evidence-backed assessments. Our art authentication services help collectors, galleries, museums and investors verify the authenticity of paintings, sculptures, and fine art—ensuring both historical integrity and financial value.

Why Authenticate Art?

The value of fine art is intrinsically linked to its authenticity. An authenticated artwork not only holds greater market value but also preserves its historical and cultural significance. Whether you are an experienced art collector, an investor, or new to the art world, verifying that your piece is genuine is crucial. At Signature, we specialize in authenticating fine art using advanced research techniques, expert connoisseurship, and scientific analysis to deliver reliable results.

Our Art Authentication Process

Our art authentication process is designed to provide definitive answers about an artwork’s legitimacy.

  1. Stylistic Analysis & Artist Signature Identification

    Our painting authentication experts conduct an in-depth stylistic analysis, examining brushwork, composition, color application, and signature details. We compare the piece against verified works by the artist in question and assess whether it aligns with their known techniques and periods of production. Our team has access to specialized fine art research collections in New York, London, Paris, and Munich, allowing us to cross-reference against museum-held originals.

  2. Provenance Research & Historical Documentation

    Verifying artwork provenance is essential in art authentication. Our research team meticulously traces an artwork’s history by analyzing ownership records, auction results, exhibition catalogs, and archival documents. We collaborate with art historians, curators, and authentication boards to provide a complete picture of the piece’s origins.

  3. Scientific Analysis & Forensic Testing

    We work with leading scientific laboratories in North America and Europe to conduct advanced forensic testing on materials, pigments, and canvas aging. Our methods include:

    • Carbon dating for organic materials

    • Pigment analysis to verify historical accuracy

    • Infrared and X-ray imaging to detect underdrawings and past restorations

    By integrating scientific research with traditional art connoisseurship, we build a well-supported case for art authentication that stands up to the highest levels of scrutiny.

  4. Final Authentication Report & Market Validation

    Following our comprehensive analysis, we provide a detailed illustrated authentication report, outlining our findings and expert conclusions. Our opinions have been accepted by leading auction houses such as Christie’s, Sotheby’s, and Bonhams, making our authentication services a valuable asset for those looking to sell fine art or validate a purchase.

Comprehensive Art Authentication Services

While our primary focus is on painting authentication, our expertise extends across various fine art authentication services, including:

Whether you need to authenticate a painting, sculpture, print, or collectible artwork, our fine art authentication team ensures accuracy and credibility.

How Much Does Art Authentication Cost?

One of the most common questions we receive is, "How much does it cost to authenticate a painting or artwork?" The cost of art authentication depends on factors such as the type of artwork, the level of research required, and whether forensic testing is necessary.

At Signature, we provide transparent and competitive pricing. During your initial consultation, we will offer a customized authentication estimate based on your needs, ensuring clarity about the process and investment involved.

Why Choose Signature for Art Authentication?

Selecting the right art authentication service is essential to protect your investment. At Signature, we offer:

  • Unmatched Expertise – Our network includes art authentication specialists, forensic experts, and leading art historians with decades of experience.

  • Global Access to Fine Art Research – We consult prestigious museums, libraries, and archives to cross-reference artworks with verified records.

  • Reliable Authentication Reports – Our expert opinions hold weight with auction houses, galleries, and private collectors worldwide.

  • Comprehensive Scientific & Stylistic Analysis – We combine historical research, comparative analysis, and forensic technology to ensure credibility.

Protecting the Value of Fine Art Investments

Investing in authentic fine art requires due diligence. Professional art authentication safeguards against forgeries, misattributions, and fraudulent sales, ensuring that your collection retains its true value.

Whether you are considering a purchase, preparing for an auction, or verifying a family heirloom, Signature’s fine art authentication experts provide the knowledge and expertise needed to authenticate your artwork with confidence.

Start the authentication process today—contact us for a consultation!

This portrait of a young girl is attributed to Italian Futurist Umberto Boccioni and was purchased at a rummage sale in the English town of Dorset for less than $100. It is estimated to be worth more than $288,000.

This portrait of a young girl is attributed to Italian Futurist Umberto Boccioni and was purchased at a rummage sale in the English town of Dorset for less than $100. It is estimated to be worth more than $288,000.

This work titled "Sunset at Montmajour" and attributed to Vincent van Gogh was found in a Norwegian attic. The previous owner, a prominent industrialist, had been lead to believe that it was not authentic.

This work titled "Sunset at Montmajour" and attributed to Vincent van Gogh was found in a Norwegian attic. The previous owner, a prominent industrialist, had been lead to believe that it was not authentic.

This artwork known as "The People’s Lawyer" is attributed to Pieter Brueghel the Younger and was discovered by an appraiser in a French family's TV room during a routine evaluation. It sold for $850,000 at auction.

This artwork known as "The People’s Lawyer" is attributed to Pieter Brueghel the Younger and was discovered by an appraiser in a French family's TV room during a routine evaluation. It sold for $850,000 at auction.

Purchased at a rummage sale to cover a hole in the wall of an Indiana home, ''Magnolias on Gold Velvet Cloth'' by the 19th-century American painter Martin Johnson Heade was later sold to a museum for $1.25 million.

Purchased at a rummage sale to cover a hole in the wall of an Indiana home, ''Magnolias on Gold Velvet Cloth'' by the 19th-century American painter Martin Johnson Heade was later sold to a museum for $1.25 million.

One man's trash is another man's Rufino Tamayo worth over $1 million. This work titled "Three People" was found between two garbage bags in front of an apartment building in Manhattan.

One man's trash is another man's Rufino Tamayo worth over $1 million. This work titled "Three People" was found between two garbage bags in front of an apartment building in Manhattan.

The owners of this work titled "The Unconscious Patient" realized that they were wise to hang onto it when it was later attributed to Rembrandt.

The owners of this work titled "The Unconscious Patient" realized that they were wise to hang onto it when it was later attributed to Rembrandt.