The Challenge of Managing Duplicate Stamps
When building a stamp collection, you will inevitably accumulate multiple copies of the same issue. Deciding which copy to place in your permanent album and which to set aside as trading stock is a fundamental philatelic skill. To make this decision, collectors must systematically evaluate the physical condition, centering, and cancellation of each specimen.
By selecting the copy with the best centering and the lightest cancellation, you preserve the visual appeal and integrity of your collection. The remaining duplicates can then be organized and stored safely for future trading or exchange, ensuring they do not deteriorate over time.
Evaluating Centering and Design Alignment
Centering refers to how evenly the printed design is positioned within the margins of the stamp. To inspect these fine details, a magnifying glass is an invaluable tool. When selecting a magnifier, choose a lens that magnifies clearly without distortion, ideally offering 5x to 10x magnification. A model that folds into a protective case is recommended to prevent scratches on the lens.
Using your magnifier, examine the margins on all four sides of your duplicate stamps. The copy where the design is perfectly balanced and not cut off by the edges or perforations is the superior candidate for your album. Avoid copies with design elements that bleed heavily into the perforated borders.
Analyzing Cancellation Quality on Used Stamps
For used stamps, the nature of the cancellation mark heavily influences its display quality. A heavy, dark cancellation can obscure the central portrait or design, whereas a lightly canceled copy allows the original details to remain visible. When sorting your duplicates, look for copies with clean, light postal markings that do not overpower the stamp's artwork.
However, do not discard heavily canceled duplicates immediately. Unless a stamp is physically torn or badly damaged, even heavily canceled copies are worth saving as trading stock. This is especially true if the issue is scarce or difficult to replace, as other collectors may still value the specimen for their own reference.
Safe Handling Protocols for Dry and Wet Stamps
Safe handling is paramount during the evaluation process. Skin oils will damage your stamps over time, regardless of how thoroughly you wash your hands. To prevent this, always use stamp tongs—which feature smooth gripping surfaces unlike standard household tweezers—when handling dry stamps.
A critical distinction must be made between dry and wet material. Wet stamps, such as those recently soaked from paper, are extremely fragile and highly susceptible to tearing. Never use tongs on a wet stamp. Instead, allow them to dry completely face-down between paper towels under a heavy book to prevent curling before attempting to handle, sort, or evaluate them.
Storing Spares and Duplicates Safely
Once you have selected your premium copy, the duplicates must be stored safely to prevent deterioration. Keep your spare stamps in glassine envelopes until you are ready to trade them or place them in a stock book. Stock books, which feature paper or plastic pockets, are excellent for duplicates because they do not have pre-printed spaces, allowing you to organize your spares however you wish.
Never use tape, glue, or sticky photo album pages to secure your duplicates, as these adhesives will permanently damage the paper and drastically decrease the stamp's value. Instead, use peelable hinges or clear plastic mounts if you choose to display them on album pages.
Organizing Your Selection Workflow
To streamline your workflow, organize your stamps systematically by country or topic before making your final selections. You can use StampSnap to quickly identify the basic issue and log your findings, ensuring you are comparing identical varieties rather than distinct watermark or perforation subtypes.
Consult a stamp catalog to verify the issue dates, printing methods, and descriptions of the stamps you are sorting. By combining careful visual inspection with safe preservation practices, you can confidently curate the highest-quality specimens for your collection while keeping your duplicates in pristine condition.
Frequently asked questions
How do I choose between two identical used stamps?
When comparing duplicates, select the copy that is well-centered and has a light, clean cancellation mark that does not obscure the design. Ensure the stamp has no physical damage, such as tears or thins, before mounting it.
Can I use standard household tweezers to handle my duplicate stamps?
No. Standard tweezers often have rough or ridged gripping surfaces that can tear or crease fragile stamp paper. You should use professional stamp tongs, which are specifically designed with smooth gripping surfaces to protect stamps from damage and skin oils.
Where should I store my duplicate stamps before trading them?
Store your loose duplicates in glassine envelopes or stock books with paper or plastic pockets. Avoid using sticky pages, tape, or glue, as these will permanently damage the stamps and decrease their value.
Should I use tongs to move stamps while they are wet?
No. Wet stamps are highly fragile and easily damaged. To prevent tearing, avoid using tongs on wet stamps; instead, let them dry completely overnight between paper towels before handling them with tongs.