Understanding Stamp Grading
Stamp grading gives collectors a structured way to describe condition. A grade does not identify authenticity by itself. Instead, it summarizes visible qualities that influence desirability and value. Centering is usually one of the first factors reviewed. A well-centered design has balanced margins and does not touch nearby perforations. Imperforate issues are judged by the available margins around the printed design.
Condition Factors That Matter
Perforations, paper, gum, color, and cancellation should be examined separately. Short or pulled perforations can reduce a stamp's grade. Creases, thins, tears, stains, pinholes, and repairs are important faults. Mint stamps also require gum evaluation. Original gum with no hinge mark is generally described differently from disturbed, hinged, regummed, or missing gum. Used stamps are often judged by how strongly a cancellation affects the design. A light cancellation may preserve more visual detail than a heavy strike.
Using a Reference Grade
This generator converts selected observations into a practical reference score. The numeric score is intended for consistent record keeping, not formal certification. Professional graders may use different scales, tolerances, and issue-specific standards. Rare stamps can also require expertization because reperforation, regumming, repairs, altered color, or counterfeit production may be difficult to detect. Market value should therefore be treated separately from the condition score. Catalog value is a reference figure, while realized prices can change with demand, rarity, provenance, certificate status, and auction quality.
Building Better Collection Records
Keep the generated report with scans, purchase information, certificates, and provenance notes. Record the catalog system used because numbering can vary between publishers. Recheck valuable stamps under magnification and proper lighting. A consistent grading record makes later comparisons easier and helps explain why two examples of the same issue may command different prices. The strongest collection records combine careful observation, clear photographs, expert opinions when appropriate, and dated market information.
Reference Grade Table
| Reference Grade | Typical Score | General Interpretation |
|---|---|---|
| Superb | 97–100 | Exceptional centering and appearance with minimal visible issues. |
| Extremely Fine | 90–96 | Excellent centering and strong overall condition. |
| Very Fine | 82–89 | Attractive example with good margins and limited faults. |
| Fine-Very Fine | 75–81 | Above-average appearance with some centering or condition limitations. |
| Fine | 68–74 | Collectible quality with noticeable imperfections. |
| Very Good | 58–67 | More obvious centering, perforation, paper, or cancellation issues. |
| Good | 48–57 | Substantial flaws but still identifiable and collectible. |
| Poor | 1–47 | Major faults, damage, or severe visual limitations. |
Frequently Asked Questions
Does the generated grade replace professional certification?
No. It is a structured collector reference. Valuable or questionable stamps may still require recognized expertization.
Why does centering affect the score strongly?
Centering is a major visual characteristic in many grading systems, especially when perforations frame the printed design.
Should mint and used stamps be graded the same way?
They share several condition factors, but mint stamps emphasize gum condition while used stamps emphasize cancellation quality.
What does condition-adjusted value mean?
The tool applies the generated score as a simple reference factor to the entered market value. It is not an appraisal.
Can I manually override the suggested grade?
Yes. The override helps you match a preferred cataloging system or a professional opinion already obtained.
Can suspected repairs or reperforation be recorded?
Yes. Select the relevant fault and add details in the condition or authentication notes.