Museums and Collectors

Organizing Exhibitions

The Niki Charitable Art Foundation represents the artist's personal collection of more than 1,000 sculptures and 5,000 graphic works of art. From this collection, the Foundation makes artwork available to museums throughout the world for exhibitions.

The Foundation acts as a point of contact for all projects related to Niki de Saint Phalle.

The Sprengel and MAMAC

From 2000 to 2002, Niki gave generous donations both to the Sprengel Museum in Hanover, Germany and to the MAMAC in Nice, France. Collectively, these donations comprise about 500 sculptures and 500 graphic artworks.

Niki made these donations, in part, to facilitate the creation of traveling exhibitions to ensure that the public would be able to see her art. The Foundation complemented these donations by lending additional works of art by Niki de Saint Phalle and Jean Tinguely.

Authorizing Exhibitions

The Niki Charitable Art Foundation holds the exclusive right to authorize exhibitions and publications about Niki and her work throughout the world. The Foundation provides research assistance, maintains the artwork and archives, and holds the intellectual property rights, including the moral rights of the artist.

Authenticity and Restoration

The Niki Charitable Art Foundation has sole responsibility for authorizing any proposed restoration and for certifying the authenticity of any work of art attributed to the artist Niki de Saint Phalle.

Certificates of Authenticity

Collectors wishing to verify the authorship of a work may contact the Niki Charitable Art Foundation at with a formal request to authenticate the work in question. Click here to download an Artwork Registration Form in Adobe PDF format, then submit the completed form to the NCAF along with detailed images of the work. In some cases, a physical examination of the work may be required.

To obtain a certificate of authenticity, please send two high quality color photographs (minimum 5 x 7 inches, preferred 8 x 10 inches) — not a copy, digital enlargement, or printout on store-bought photo paper — depicting the complete work, as well as photographs showing any signatures or other markings in close-up. Send the photographs to the following address:

        NCAF Archives
        9920 Prospect Avenue, Suite 114
        Santee, California 92071

Certificates are issued twice annually, in May and in November. Be sure to submit authentication requests at least 2 weeks earlier to allow sufficient time for processing. No exceptions will be made.

The fee for this service is $200 per work and will be invoiced. The NCAF will return your certificate by courier service to ensure its safe arrival.

Please note:

The NCAF does not issue certificates of authenticity for printed artwork.

All material submitted becomes property of the NCAF.

The NCAF does not assist with appraisals or valuations.