Stamp Value Calculator
Estimate the market value of a postage stamp based on catalog value, condition, centering, and gum status.
How to Use the Stamp Value Calculator
- Enter the stamp's catalog value.
- Select the overall condition.
- Select the centering quality.
- Select the gum status.
- Click Calculate to see the estimated market value.
使用场景
- •Estimating insurance value of a stamp collection.
- •Pricing stamps for sale or trade.
- •Comparing value of stamps in different conditions.
- •Educational tool for beginning philatelists.
公式
Estimated Value = Catalog Value × condition multiplier × centering multiplier × gum multiplier.
常见问题
What is catalog value?
Catalog value is the retail price listed in a philatelic catalog such as Scott, Stanley Gibbons, or Michel. Actual market value is typically a percentage of catalog value.
Why does centering matter?
Centering refers to how well the stamp design is centered within its perforations. Off-center stamps are significantly less valuable than superb centered examples.
What does OG (original gum) mean?
Original gum (OG) means the stamp retains its original adhesive backing. Hinged stamps have a hinge remnant, reducing value. No-gum stamps are least valuable.