Keith Haring – Düsseldorf 1988

01
Description

Is this signature on the Keith Haring poster authentic?

The artwork is a vibrant Keith Haring poster.

Keith Haring – Düsseldorf 1988
Keith Haring – Düsseldorf 1988

The artwork titled “Düsseldorf 1988” is attributed to the renowned artist Keith Haring. Created during a period of intense artistic activity in 1988, the piece features a vibrant color palette and bold, graphic lines characteristic of Haring’s iconic style. The poster commemorates one of Haring’s last exhibitions at the Galerie Hans Mayer in Düsseldorf, reflecting the artist’s commitment to democratizing art and blurring the boundaries between public space and traditional galleries. The artwork holds historical significance as a visual testament to Haring’s late-career vibrancy and cultural impact.

Provenance

The provenance of the poster can be traced back to an online auction purchase. The poster is in excellent condition, encased in a sleek black frame that complements the bold lines within the artwork. The backside of the poster is not described in the report. The poster measures 83.5 cm by 58.5 cm and features a signature in the bottom left corner attributed to Keith Haring. The signature shows irregularities that raise concerns about its authenticity, as analyzed in detail in the report.

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Expert’s take

Analysis

The item’s signature shows inconsistencies not typical of Keith Haring’s authentic signatures.

The expert analysis of the artwork “Düsseldorf 1988” by Keith Haring involves a thorough examination of the visual composition, signature, historical significance, and provenance. The artwork aligns with Haring’s iconic style of bold colors and outlined figures, consistent with his body of work from the 1980s. The signature on the poster, labeled Q1, exhibits irregularities in form, stroke direction, and execution quality, deviating from Haring’s known signature patterns. This raises concerns about its authenticity, supported by an AI-based authentication model that classifies the signature as non-authentic with 98% accuracy. Comparative analysis against verified authentic signatures and reproductions from Galerie Hans Mayer suggests that the poster may be an original reproduction, potentially valuable due to its association with the gallery. However, the uncertainty surrounding the signature significantly impacts its market value. The Final Appraisal Value for the artwork is 500€, reflecting the uncertainties regarding the signature and the overall authenticity of the piece.

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A.I. Analysis

A.I. Authentication

The A.I. authentication analysis determined the signature as non-authentic with 98% accuracy.

Keith Haring – Düsseldorf 1988

The A.I. classification analysis was conducted using a model trained on a dataset of authentic signatures and skilled forgeries of Keith Haring. The model achieved a 98% accuracy rate and classified the signature labeled Q1 as NON-AUTHENTIC based on deviations in stroke formation, pressure, and directionality compared to genuine Haring signatures. This assessment is crucial in determining the authenticity and value of the artwork.

04
Valuation

Value Estimation

The true value of the piece is estimated at 500€, taking into account its preservation, framing, and historical context.

Keith Haring – Düsseldorf 1988

The report discusses the examination of a Keith Haring poster titled “Düsseldorf 1988,” associated with Galerie Hans Mayer. The poster features a signature purportedly by Haring, but AI analysis deems it non-authentic with 98% accuracy. Despite doubts about the signature’s authenticity, the poster’s association with Galerie Hans Mayer and its historical significance suggest a value of 500€, considering its condition, framing, and rarity of authentic signed posters from the exhibition.

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    06
    People

    ConfirmArt Team

    Meet the Team

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    ConfirmArt offers an unique authentication and collection management service in the market, at an unmatched price per report.

    • Unique Service that blends human expertise with A.I.
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    • ConfirmArt Team: Guided by Roi S., we are experts in Art, Collection Management, A.I., and history.
    • Commitment to Integrity: to ensuring the authenticity and enhancing the value of your collection.
    Roi S., PhD.
    Founder & Lead Analyst
    Richard C., BArts.
    Expert, Editor
    Sandra G., BArts
    Provenance and History.
    07
    FAQ

    Questions?

    Tap to unveil the answers.

    Something else? write Roi directly at:
    Is it worth it to purchase a report for $99?

    Absolutely. For just $99, you receive a comprehensive report that leverages our rigorous verification and valuation methods, which are rooted in evidence and not mere opinion. The detailed procedures we undertake are valued well over $1000 in the art appraisal industry. Regardless of whether an artwork is authenticated or identified as inauthentic, our reports provide insightful information that enhances your understanding of the piece’s value and contributes significantly to the future valuation of your collection. Our commitment to quality is reflected in the positive feedback from our customers, who appreciate learning the “why” behind our findings. You can read an example of our customer reviews here.

    Do you provide advisory services for collections?

    Yes. Our tailored reports offer invaluable guidance for collectors, steering them through smart acquisitions and well-timed sales to steadily increase the value of their collections. We don’t just focus on individual pieces; we consider the entire collection’s coherence and market potential. Our approach is data-driven and informed by extensive market analysis.

    The chart below illustrates the success story of one of our valued clients over a year. It’s a testament to how each meticulously prepared report and advised transaction can significantly contribute to an upward trend in the overall value of a collection, all while curating an exquisite selection of art pieces. This success story showcases the power of expert validation: making informed choices leads to remarkable returns.

    Is the Expert authenticity assessment accurate?

    Yes, our authenticity assessment is highly accurate. It is not based on subjective opinions; instead, we provide tangible evidence to support our claims. This evidence consists of specific traits that are consistent across numerous verified authentic pieces, traits that are often missed even by the most skilled forgers. These authenticity cues—such as style, composition typical to an artist, stroke direction in autographs, characteristic signatures and monograms, and preferences for dedications in memorabilia—are derived from our extensive databases. Within this FAQ, we’ve included a selection of examples illustrating such cues that have enabled us to identify skilled forgeries, ones that were previously certified as authentic by professional curators relying solely on their subjective judgment.

    How can you distinguish a signature made using an autopen from a genuine one with just a photo?

    An autopen, a device designed to replicate signatures, follows a predetermined path to mimic handwriting. Despite its precision, the autopen process isn’t flawless and often leaves behind subtle clues that it has been used. Our expertise in this area comes from owning various autopen machines and extensively studying the marks they leave. We’re familiar with the specific traits of autopen signatures, such as uniform pressure, lack of natural variation in stroke, and consistent start and end points that human signatures rarely exhibit. By examining these telltale signs in high-resolution photos, our experts can effectively differentiate between autopen signatures and genuine hand-signed inscriptions.

    How does AI-guided authentication work, and is it reliable?

    AI-guided authentication employs advanced machine learning algorithms trained on extensive datasets of authenticated items, such as signatures of notable individuals or verified artworks. The process involves optimizing the images for precise feature extraction, which is crucial for the AI to learn and recognize authentic characteristics. A control dataset, a mix of verified authentic signatures and known forgeries, is used to validate the model’s performance with a high level of accuracy. This accuracy provides strong confidence in the AI’s ability to authenticate signatures and artwork, making it a reliable tool in our appraisal process.

    Is forensic graphology considered a pseudoscience?

    General graphology, which suggests that personality traits can be discerned from handwriting, is indeed viewed with skepticism by the scientific community. However, our service utilizes forensic graphology in a much narrower and scientifically accepted sense: we focus on the authentication of signatures and handwriting by comparing them with verified samples. This branch of forensic science is widely used in legal and law enforcement settings and is based on observable, repeatable patterns. Our application of graphological analysis is evidence-based, employing rigorous standards to match handwriting characteristics with established authentic exemplars. This method is respected and utilized in forensic investigations and is not considered pseudoscience.

    How can you determine if an artwork is a reproduction just from a photo?

    Identifying a reproduction from a photograph is a nuanced process that benefits greatly from technology. We have access to comprehensive records and databases that catalog verified original prints and their characteristics. By using these resources, we can distinguish handmade reproductions from original numbered prints by observing details that may not be perceptible to the untrained eye. Our AI-powered search tools analyze the photo, comparing it with high-resolution images of authentic works to find the closest match. These advanced algorithms look for specific markers and inconsistencies that are typical of reproductions, allowing us to deliver reliable results based on extensive data and sophisticated technology.

    Where do you source the images of verified authentic samples for comparison?

    Our collection of verified authentic samples for comparison comes from a variety of reputable and authoritative sources. These sources ensure that our comparisons are based on the most accurate and reliable images available, giving you confidence in our authentication process. This includes:

    • Private Image Databases: We access high-quality, proprietary databases that are often costly and exclusive, ensuring we have a broad selection of authenticated images to use for comparison.
    • Catalogue Raisonné: These comprehensive, annotated listings provide documented and photographed works of artists and are an invaluable resource for authentication purposes.
    • Museum Collaborations: We partner with museums and other cultural institutions, which allows us to compare artworks and signatures against their vast collections of authenticated pieces.
    • Auction Houses: We also obtain verified samples from past auction catalogs, where artworks and autographs have been authenticated by experts.
    Do you issue Certificates of Authenticity?

    Our Complete Report serves as a comprehensive Certificate of Authenticity (COA) and goes beyond by offering evidence-based conclusions, not merely opinions. The report itself is a detailed document that substantiates the authenticity of your piece with concrete findings.

    However, should you require a traditional COA for marketing or other purposes, we are pleased to provide one. This certificate will be signed by Roi S., PhD, and will reference the detailed findings in your Complete Report. This formal COA, also numbered and with a unique hologram, can be requested when your artwork receives an AUTHENTIC verdict based on our rigorous examination process.

    Do your appraisals comply with international standards?

    Yes, our appraisals rigorously adhere to internationally recognized standards, ensuring that our evaluations are both accurate and ethically responsible. We align our practices with the AIC (American Institute for Conservation) Code of Ethics, and we follow the guidelines set by the Uniform Standards of Professional Appraisal Practice (USPAP). Our methods also comply with SWGDOC and ANSI/ASB Standard 35.

    08
    Clients

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