Professional Stamp Experts
 
1918 Inverted Jenny Stamp

Introduction Why Grade Stamps? What is Grading? PSE Grading System Soundness Centering Combining Soundness and Centering Eye Appeal Gum Condition Appendix



The Components of Grading

Stamps fall into two major categories: Mint (unused) and Used (cancelled). The final grade of a mint stamp has three principal components: centering, soundness and eye appeal. Mint stamps are additionally qualified by the condition of the gum, and whether or not the stamp has been hinged. The final grade of a used stamp is likewise determined by its centering, soundness and eye appeal (including an adjustment for the cancellation.) Gum condition obviously does not apply to used stamps.

MINT

Centering

Soundness
(faults)

Eye Appeal
(color & impression)

Gum Condition
USED
Centering

Soundness
(faults)

Eye Appeal
(color, impression & cancellation)