Packaging history
Factory-seal expectations should be based on the exact manufacturer, region, product and era. Generic checklists are secondary evidence.
Market research
Completed transactions are preferred to active asking prices. Exact identity and condition matching matter. Outlier sales should not be generalized.
Conservation
Storage guidance favors stable, clean, dark conditions and material-appropriate support. Sealed electronics and mixed-material objects may have internal deterioration risks that cannot be inspected without opening.
Tool methodology
Scores on this site are transparent heuristics used for consistent personal documentation. They are not professional grades or authenticity probabilities.