Should I clean old stamps before selling them?
Why Cleaning Hurts Value
Collectors value stamps in their original condition, including the paper surface, the gum on the back, and any natural color. Water, soap, or a cleaning solution can soften paper, remove gum, or change color. Even a stamp that looks dirty may be worth more as it is than after a cleaning attempt.
Dealers will often inspect for signs of washing. A stamp that shows evidence of cleaning may be treated as damaged, which can reduce the offer dramatically. Honest condition is usually better than a stamp that looks freshened up.
- Water can remove or dissolve gum
- Solvents can change color and weaken paper
- Scrubbing creates thin spots
- Dealers can usually spot cleaning
What to Do Instead
Store the stamps in acid-free holders or glassine envelopes to keep them from getting worse. Handle them only by the edges with clean hands or tweezers. Describe the condition honestly when you list or sell them.
If a stamp has a light surface mark, ask a specialist for advice before doing anything. Good storage and an accurate description usually bring better results than any cleaning attempt.
If a stamp is stuck to paper or an envelope, do not try to soak it free. Removal can damage the stamp, so leaving it attached may be safer. A specialist can advise whether it can be separated or should be sold as it is.
Common mistakes
- Washing stamps to make them look newer before listing them.
- Using hot water, tape, or hinges that leave residue or damage the stamp.
