The Post-2007 USPS Adhesive Transition
For decades, stamp collectors enjoyed the simple routine of soaking used postage stamps in water to remove them from paper envelopes. However, the United States Postal Service introduced a major change to its printing specifications that altered this practice. Until 2007, almost all United States self-adhesive stamps could be successfully removed from envelope paper by soaking them in water for an extended period of time, typically about 20 minutes.
After 2007, the United States Postal Service transitioned to an oil-based adhesive backing rather than a traditional water-based backing. This change made traditional water soaking completely ineffective for modern issues, requiring collectors to adapt their preservation and separation methods.
Why Traditional Water Soaking Fails on Modern Stamps
When you attempt to soak a post-2007 U.S. self-adhesive stamp in water, the water-insoluble nature of the oil-based backing prevents the adhesive from dissolving. Instead of releasing the paper, the stamp remains firmly attached, and prolonged exposure to water can actually saturate and damage the delicate paper fibers of the stamp itself.
Because the backing is oil-based, an oil solvent is required to break down the adhesive bond and safely release the stamp from its paper backing. Understanding this physical difference is essential to prevent accidental tears, thinning, or complete destruction of modern postage stamps.
Essential Tools for Handling Modern Self-Adhesives
Before attempting to separate modern self-adhesive stamps, you should gather the proper philatelic tools to ensure safe handling. Stamp tongs are highly recommended for handling dry stamps because the natural oils from your skin can cause permanent damage to the paper and adhesive. Unlike standard household tweezers, stamp tongs feature a smooth gripping surface designed specifically to handle delicate paper without leaving marks or tears.
Additionally, a magnifying glass with 5x to 10x magnification that folds into a protective case can help you inspect the stamp's surface for any pre-existing damage, paper thinning, or residual adhesive before you begin the separation process.
Step-by-Step Guide to Separating Oil-Based Stamps
To separate a post-2007 U.S. self-adhesive stamp, you must use a safe oil solvent rather than water. Begin by applying a small amount of a recommended oil solvent to the back of the envelope paper behind the stamp, allowing it to penetrate the paper and reach the oil-based adhesive.
As the solvent breaks down the adhesive, gently peel the stamp away from the paper using your stamp tongs. Never pull or force the stamp, as this can cause paper thinning. Once separated, place the stamp face down on a clean surface to dry, and ensure all residual solvent has evaporated before placing the stamp in your collection.
Organizing and Storing Your Modern Stamps Safely
After successfully separating and drying your modern self-adhesive stamps, you must store them using safe, archival-quality methods. You can choose to store your stamps in traditional stamp albums or stock books, which feature plastic or paper pockets that allow you to organize your collection however you wish.
When mounting stamps into an album, always use proper stamp hinges or clear plastic mounts. Never use household tape or glue to secure stamps in your album, as these adhesives will permanently decrease the stamp's value and cause severe damage when you attempt to remove them.
Managing Uncertainty in Modern Stamp Identification
Identifying modern self-adhesive stamps can sometimes be challenging due to similar designs issued over multiple years. Using a stamp catalog can help you verify the exact issue date, printing method, and description of your stamps. For a quick and convenient digital record, using an app like StampSnap can help you create a likely identification and log the stamp into your digital collection record.
Once your stamps are dry and safely mounted, you can use StampSnap to scan and organize your newly separated modern issues into a digital inventory, ensuring your collection remains beautifully organized and protected for years to come.
Frequently asked questions
Why won't my modern U.S. self-adhesive stamps soak off in water?
Until 2007, almost all U.S. self-adhesive stamps could be removed by soaking in water for about 20 minutes. However, the USPS changed its printing specifications, and most current U.S. self-adhesives feature an oil-based backing rather than a water-based backing. To separate these modern stamps, you must use an oil solvent instead of water.
Can I use household tape or glue to mount my separated stamps?
No, you should never use household tape or glue to mount stamps in an album. Doing so will decrease the stamp's value and likely cause severe damage when you try to remove them. Instead, use proper stamp hinges or clear plastic mounts.
What tools should I use to handle dry stamps safely?
You should use stamp tongs to handle dry stamps. Tongs have a smooth gripping surface designed specifically for stamps, which prevents the natural oils on your skin from damaging the paper.
How can a stamp catalog help me identify modern self-adhesive stamps?
A stamp catalog is a valuable reference book filled with illustrations, issue dates, descriptions, printing methods, and values for stamps in both used and unused conditions, helping you accurately identify similar-looking modern issues.