Lead alloy from 5th c. BC.

▻ Associate Member of the Swiss Chamber of Technical and Scientific Forensic Experts
▻ Fellow of the International Institute for Conservation of Historic and Artistic Works


Expertise

David has a profound understanding of material behaviours, especially concerning archaeological artefacts. His expertise enables him to assess and address the complexities of conservation and restoration. He meticulously evaluates the preservation state of artefacts, identifying both their current condition and any previous restoration efforts that may have altered their integrity. In addition, he resolves disputes related to material degradation, drawing on his insight into how metals respond to varying environmental conditions.

His authentication process is rigorous, involving a thorough analysis of material characteristics and technical indicators of aging to establish certificates of authenticity. David also designs research projects that explore material’s fatigue and mineralization processes, offering valuable insights into how metals behave under stress. Through detailed inventories and regular conservation assessments, he ensures that collections are maintained with optimal care, considering the unique behaviours of dissimilar materials.

Before displacing, storing or shipping artworks, David assesses their conservation status to protect them from potential damage. He emphasizes the preservation of artefacts during transfers, applying his knowledge of material stability. In emergencies, he provides immediate evaluations and solutions, leveraging his understanding of material behaviours to mitigate damage effectively. He also addresses challenges related to metal salt dissolution and migration in aqueous environments. When needed, he employs metallographic analysis to enhance precision in understanding the issues affecting artefacts. This systematic approach ensures that insights are accurate and reliable, illuminating the root causes of conservation challenges.

Distinctions

1998 – Distinction « Pro Cultura Hungarica »
Cultural & Education Ministry of the Hungarian Republic
Distinction obtained for the transfer of technological and scientific knowledge
1994 – Prix Irène Meynieux 1994
Association Française pour l’Avancement des Sciences de Paris
Distinction obtained for the scientific research on the Etruscan gold granulation

Recommendations

Eve Maria Ayer: We have used David Cottier-Angeli’ services on several occasions to test ancient works of art for authentication. He proved to be very skilled in his scientific field, reliable, and very professional.
It is also very pleasant to work with him. Definitely, an address to keep!

Zsuzsa: David is a highly professional person, absolutely possessing very elaborate knowledge and skills of his profession. His experience and thrive to perform at the highest standards shines through all his work. he is also a creative thinker. Our experience to prepare a proposal jointly for a world-leading fashion house was a wonderful experience.
I can strongly recommend David to partner with you, will definitely not be disappointed.

Livie Gallone: Un des meilleurs restaurateurs de Suisse Romande avec une expertise très variée. Excellent service et respect des œuvres qui lui sont confiées. Nous l’avons recommandé a plusieurs clients de Christie’s a leur plus grande satisfaction.

Vacheron Constantin / Stonehage Fleming / Museum of Fine Art Budapest

B_ImpactAssessment Proud that my impact is not only to generate returns, but also to create value for its customers, community, and the environment – very highly graded with 186.3 in Dec. 2021.