a suggestion

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Note added at 1 hr (2006-06-19 16:22:08 GMT)
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http://art-collecting.com/appraisals.htm

Art Appraisals
How to determine the value of your artwork
Resources and links to organizations that can help you to understand the process of getting a current appraisal so you and your insurance company will know your artworks value. More information will be added to this page, you look an update soon.

Listed below are some of the most established appraisal associations.


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American Society of Appraisers (ASA)
The American Society of Appraisers is an organization of appraisal professionals and others interested in the appraisal profession. International in structure, it is self-supporting and independent. The oldest and only major appraisal organization representing all of the disciplines of appraisal specialists, the society originated in 1936 and incorporated in 1952. Headquarters is in the metropolitan Washington, D.C., area.



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Note added at 2 hrs (2006-06-19 18:00:28 GMT)
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I agree with Commuease.

评估 and 评鉴 are basically synonyms when it comes to artwork. But 评估 can also be used for solely evaluating the merit, or critiquing a piece of artwork, without having to put a dollar figure estimate on it.

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Note added at 9 hrs (2006-06-20 00:55:49 GMT)
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correction:

...solely evaluating the merit of, or critiquing a piece of artwork.