Understanding stamp condition is essential for valuation and collection.
Original gum, never hinged. Perfect centering and color.
Original gum with small hinge mark. Otherwise perfect.
Minor imperfections barely visible. Well-centered.
Noticeable but not serious flaws. Adequate centering.
Significant flaws, heavy cancellations, or poor centering.
Postally used with cancellation. Value depends on cancellation quality.