Collector guide
Build a useful collection inventory
Record identity, location, condition, acquisition facts, and evidence without mixing them with changing market estimates.
Reviewed 2026-08-01Start with stable identity fields
Record the card name, set, collector number, language, edition, finish, and certification number when applicable.
- Use one record per distinct item or version
- Photograph higher-priority cards
- Record the physical storage location
Separate facts from estimates
Acquisition date and cost are historical facts. A current market observation is time-sensitive research. Store them separately so a later estimate does not overwrite the original record.
- Keep receipts where available
- Date every market observation
- Name the observation source and currency
Maintain the inventory
Review the inventory after purchases, sales, trades, grading returns, or storage changes. Back up records in a format you can still open later.
- Use consistent labels
- Correct duplicates
- Export a backup periodically