I would strongly suggest you read the New Museum Registration Methods section on Risk Management, including the chapter on Insuranc by Sean Tarpey. This will give you a better idea of whether or not you SHOULD undertake an object-by-object appraisal for your collection rather than establish a probable maximum loss level of coverage and insure your collection for fair market value at time of loss, rather than a predetermined appraisal ("scheduled value") that will need to be updated on a regular basis. Janice Klein Registrar, The Field Museum [log in to unmask]