High-resolution front and back images reveal paper, gum, perforations, cancels, and faults.
Identification rule: record what is visible before assigning a catalog number or value.
What to record
- Scan front and back at consistent scale.
- Add side lighting for embossing or repairs.
- Include certificate and cover fronts and backs.
What commonly causes mistakes
- Aggressive sharpening invents edges.
- Color filters distort shade research.
- A black background can hide thins or repairs.
A practical research sequence
- Use neutral color and no beauty filters.
- Capture full perforations and margins.
- Add close-ups of faults or varieties.
- Keep original files.
Condition and value
Value depends on exact identity, condition, centering, gum or cancellation, faults, certification, demand, and a defensible comparison set. A famous design does not automatically make an individual example rare.
Compare current collector listings
Use listings to study descriptions, scans, certificates, and market supply. Asking prices are not completed-sale evidence.
Compare collector listings