ART SIGNATURE AUTHENTICATION
Forensic Handwriting Examination for Art Signature Authentication
In the international art market, the authenticity of a signature can significantly influence the historical and economic value of an artwork. Handwritten signatures, inscriptions and dedications are key elements when determining whether a work can be attributed to a specific artist.
As a forensic handwriting expert, I provide specialized technical analysis focused on the authentication of handwritten signatures appearing on artworks.
This service is intended for collectors, galleries, auction houses, art dealers and legal professionals who require an independent forensic opinion regarding the authenticity of a signature or handwritten inscription.
The analysis is conducted through professional handwriting examination methodologies used in questioned document analysis and forensic graphoscopy.
Forensic Handwriting Expert for Art Authentication | Signature Analysis on Artworks
Expert reports and certificates of authenticity based on scientific handwriting analysis for collectors, galleries and legal professionals.
Handwriting Authentication Services for Artworks
The following services are available for international clients:
• Authentication of signatures on artworks
• Examination of handwritten dedications or inscriptions
• Comparative handwriting analysis with reference signatures
• Technical forensic reports for collectors and galleries
• Certificates of Authenticity limited to handwriting examination
• Expert reports for legal proceedings involving disputed signatures
These analyses focus specifically on the handwriting characteristics of the signature, not on the artistic, stylistic or material evaluation of the artwork itself.
Methodology of Forensic Handwriting Analysis
The authentication process is based on the comparative examination of graphic and dynamic handwriting features.
The analysis may include the evaluation of:
• Stroke structure and morphology
• Graphic rhythm and execution dynamics
• Direction, proportions and spatial organisation
• Characteristic movement patterns
• Recurrent graphic features present in reference material
Whenever possible, signatures are compared with documented reference signatures attributed to the artist, obtained from reliable sources such as historical documents, museum archives, catalogues or other verified documentation.
This comparative analysis allows the identification of consistent handwriting characteristics or significant divergences between the questioned signature and the reference material.
Certificates of Authenticity (Handwriting Scope)
In certain cases, a Certificate of Authenticity related exclusively to handwriting examination may be issued.
It is important to clarify that this certification refers only to the authenticity of the handwritten signature or inscription, based on forensic handwriting analysis.
This certificate does not constitute an authentication of the artwork as an artistic object, nor does it replace the evaluation of foundations, museums, art historians or catalogue raisonné committees.
Expert Reports for Legal and Art Market Contexts
Forensic handwriting reports may be required in various contexts, including:
• Art market disputes
• Provenance investigations
• Authenticity verification prior to sale
• Legal disputes concerning artwork attribution
• Inheritance or ownership conflicts involving artworks
Reports are prepared according to professional forensic methodology and can be used as technical documentation within legal procedures or private evaluations.
International Clients
Services are available for international clients. Documentation can be reviewed remotely when high-quality images of the artwork and signature are available.
Expert reports may be issued in English for international clients.
In accordance with Spanish procedural law, any judicial ratification or expert testimony before Spanish courts must be conducted in Spanish.
If required, certified translations may be provided for international legal proceedings.
Professional Profile
Leticia Quintana Ojeda
Forensic Handwriting Expert
Director of ABCGRAFOS PERITOS CALÍGRAFOS
Specialised in forensic handwriting examination and authentication of signatures appearing on documents and artworks.
Professional services include forensic handwriting analysis, questioned document examination and expert reporting for legal and private clients.