Hello, my name is Isabelle Weiss.

I am the founder of CollectorAnonymous, an art appraisal and advisory firm based in Detroit, MI.

After a decade of experience in the primary and secondary art markets, I built CollectorAnonymous to provide appraisal and collection management services for private, corporate and institutional clients, and their professional advisors.


Our manifesto:

📈 Understand how to tailor appraisal and advisory services for the unique needs of the diverse collectors in today's complex, fast-moving market.

📱Embrace technology as a tool for optimizing the value of appraisal and advisory services.

💡Educate collectors and clients of art appraisal/advisory services on the often opaque worlds of the art market and appraisal industry. Because I believe knowledge is power for us all.

🖼 Encourage thoughtful and responsible collecting + on-going stewardship to enrich our community, culturally and economically, through art.


Our commitment to excellence:

Inspired by the appraisal industry standard for “Qualified” services, CollectorAnonymous is built on our dedication to providing the highest level of service and expertise, for every project and client.

Driven by a decade of experience and our robust continuing education, we know how and where to focus our attention in every phase of your appraisal or advisory project.

Beyond our own expertise we work with a diverse network of art specialists and experts; curators and scholars; art conservation, logistics and preparation professionals.

Watch to meet founder and director Isabelle Weiss


I look forward to helping you with your art appraisal and advisory needs,

Isabelle Weiss

Accredited appraiser of fine + decorative art

Director, CollectorAnonymous