Who we are

Our Team

We are a Group of art professionals and interdisciplinary scholars devoted to valuation and authentication of works of art and antiques. Professional expertise, conservation and restoration, art history, gemology and public calligraphers. 

Mr. Gustavo Perino

Founder – Owner

Art Authenticator and appraiser of works of art, specialized in Painting and Education, responsible for Givoa.

Project owner and University professor.

Mr. Omar Cáceres


Art Authenticator, Professor of Painting (UMSA – University of Social Museum of Argentina). Judicial expert and undisputed referent in Argentinian´s Painters, specialist in the complete Work of Antonio Berni and his contemporaries. Artist. Art Expert in Bank of Buenos Aires until 1987.

Ms. Melanie Bairo


Art Authenticator and appraiser of works of art, operational assistance of Givoa.

Mr. Mario Florán


Art Authenticator and Valuator of works of art, specialized in Painting, Engraving and Sculpture.

University Professor.

Ms. María Alejandra Leyba

Project Manager

Questioned Documents Examiner. Expert in signatures and handwriting. UBA University, SIPDO member and Specialist in Documentscopy University of Salamanca, project manager at Givoa.

Ms. Patricia Soto


Public Calligrapher (University of Buenos Aires), member of SIPDO and AAPA.Jus (Argentine Association of Auxiliary Experts in Justice), Judicial and private criminal expert.

Karina Gonzalez Givoa

Ms. Karina V Gonzalez


Questioned Documents Examiner. Expert in signatures and handwriting. IUPFA University, SIPDO member.

Mr. Mario Héctor Carlos Alcalde


Lawyer by the National University of La Plata UNLP (T 72 F 440 CPACF / T XXXIX F 335 CALP).  University Technician in Appraisal and Valuation of Works of Art. UMSA.

Ms. Jimena Lamela


Art Authenticator and appraiser of works of art, professor specialized in Furniture and educational coordinator of Givoa. Judicial Expert.

Ms. Yanina Brosky


Art Authenticator and art appraiser and gemologist. Specialized in jewelry and gemstone appraisals. Graduated at UMSA and at the Educational Complex of Jewelry.

Ms. Raquel Villagrán


Museologist graduated from the Federal University of the State of Rio de Janeiro. Expert in Works of Art, registered at TJRJ. Master and PhD student in Museology and Heritage – UNIRIO/MAST. Postgraduate in Expertise and Evaluation of Works of Art (Santa Ursula University) in progress.

Mr. Luis Verpoest


University technician in expertise and valuation of works of art. University of Social Museum of Argentina.

Ms. Vilma Perez-Casalet


Conservator-Restorer of Cultural Objects and Bibliographic Material at the Ministry of Culture of Argentina, Professor of Conservation and Restoration. She has a Master’s Degree in Conservation and Restoration of Cultural Assets and Bibliographic Material at the National University of San Martin and a postgraduate degree in Conservation and Restoration of Metallic Heritage at ENCRyM Mexico.

Ms. Azanate Rodrigues


Conservator and restorer of works of art by the Euro American College of Brasilia. Director of “Casa do Artesão”. Graduated in Civil Engineering at the University of Planalto and Visual Arts at AEUDF and post-graduate student in Artworks Expert at Santa Ursula University in Rio de Janeiro.

Ms. Jimena Aballay


Art Authenticator and appraiser of works of art. Specialized in furniture and italian renaissance painting

Mr. Miguel Mónaco


Specialist in numismatics and medals (Argentinian and American), former member of the American Numismatic Association ANA Member 160711 and former member of the Numismatic Center of Buenos Aires.



We certify, authenticate and valídate pieces of art by means of research study, different work procedures and connections with the academic community. Givoa is directed by university graduates in Expertise and Valuation of Pieces of Art and it stands out not only because of our team’s technical knowledge but also because of the way we work and our commitment.


We aspire to be undisputed referents and a reliable source in expertise and valuation of pieces of art in the area. We aim to help eradicate the purchase and sale of fake pieces of art and cooperate with the justice processes concerning these pieces.



We stand out because of our extensive technical knowledge coming from our academic background and our great experience in the field.


We aim at having a close relationship with our customers, working together to help them achieve their aims.


We are very proud of being honest in our reports and research, we give detailed relevant information without omissions or fallacies.


We are highly committed with the preservation of the cultural heritage and with history.

Estamos disponibles para cualquier consulta, esperamos su contacto!