Describe the storage sequence
State the locations, approximate periods and known conditions. Separately note moves, repacking and transfers to other people. Do not try to reconstruct exact temperatures and humidity from memory: identify which parameters were actually recorded and which remain unknown.
Preserve the initial documentation
Photos taken on receipt, reports and correspondence help compare conditions. The materials must be clearly linked to the particular item. A later photo of a similar area does not replace an image of the original defect if the nature of the change is now different.
Agree the conditions before handover
Preservation methods depend on the material and the stated task. Cleaning, treatment with products and attempts to restore appearance may alter the indicators. Before sending the item, discuss packaging, permissible handling and whether accompanying parts need to be retained.
What to prepare
- Product identification and description of the original defect.
- Photos and reports from the discovery date.
- Information on storage locations and transport.
- List of cleaning, repairs and other interventions.
- Description of the current condition and surviving packaging.
What to bear in mind
Unknown storage conditions may limit conclusions on the timing and mechanism of damage. They cannot automatically be declared either the cause of the defect or irrelevant.
Outcome of preliminary preparation
A prepared history helps assess whether the original and current conditions are comparable and determine what conclusions the surviving goods can support.
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