The Challenge of Look-Alike Stamp Designs
Correctly identifying a postage stamp in a worldwide catalog can be a complex task. While finding the basic country of origin and design gets you to the right general area, look-alike issues printed over decades with minor changes can frustrate even patient collectors. Many stamp designs look nearly identical at first glance but were actually issued for entirely different purposes, such as standard postal delivery, fiscal revenue collection, or special historical commemorations.
These functional differences often result in completely separate catalog listings and widely varying values. To successfully navigate these varieties, collectors must develop a strong attention to detail and learn where to look for the tiny inscriptions and design changes that reveal a stamp's true identity.
Postage vs. Revenue: The Case of North Borneo
A classic example of purpose-specific design changes can be found in the late nineteenth-century issues of North Borneo. In 1886, the territory issued a half-cent rose stamp designed solely to pay postage. However, in 1887, a highly similar version was released to pay both postal and fiscal fees. While the central designs are almost identical, a close inspection reveals that the 1886 stamp features the word POSTAGE near the bottom of the design.
In contrast, the 1887 version displays POSTAGE & REVENUE on a scroll that spreads to the very edge of the design. Missing this small inscription change can lead to misidentifying the stamp's catalog number and misjudging its place in a collection. Collectors must carefully review every aspect of the design to catch these subtle text variations.
Definitives vs. Commemoratives: Liechtenstein's Prince Johann II
Similar stamps can also serve different commemorative purposes. Under Austrian administration between 1912 and 1918, the earliest stamps of Liechtenstein featured the profile of Prince Johann II. The 1917 to 1918 20-heller dark green stamp was issued as a standard definitive. However, on November 12, 1918, a highly similar stamp was released to commemorate the 60th anniversary of the Prince's accession.
To mark this event, the designers replaced the upper corner designs of the definitive stamp with the specific year-dates of his reign. Because these dates are remarkably small and difficult to see, catalog listings often include bold notes directing collectors to look closely at the upper corners to distinguish the commemorative variety from the common definitive.
Watermarks and Paper Security: Distinguishing Postal from Fiscal Issues
When visual design elements are identical, the paper itself often holds the key to identifying a stamp's intended purpose. Governments frequently used distinct watermarks as security measures to prevent counterfeiting and to separate different classes of stamps. For example, United States philatelic materials feature specific watermarked letters.
Standard postage stamps of certain eras utilized a double-line USPS watermark or a single-line USPS watermark. In contrast, revenue stamps used for fiscal purposes were often printed on paper watermarked with USIR, which stands for United States Internal Revenue. Identifying these hidden marks is essential for verifying whether a stamp was meant for mailing a letter or paying a tax.
Safe Methods for Detecting Hidden Watermarks
To safely check for watermarks without damaging your stamps, you must use proper philatelic tools and fluids. The American Philatelic Society recommends placing the stamp face down in a dark tray and moistening it with a specialized, commercial watermark fluid such as Clarity. This fluid temporarily brings up the watermark in dark lines against a lighter background before evaporating quickly, leaving the stamp's original gum intact.
Avoid using harsh household solvents or lighter fluids, which can pose health risks and potentially damage delicate paper fibers. For collectors seeking a digital starting point, using the StampSnap app can help you scan a stamp to find a likely match or log the item in your digital inventory, which you can then verify using physical tools.
Why Minor Details Matter for Stamp Valuation
Paying close attention to these minor details is a fundamental skill for any collector. The presence or absence of a specific watermark, a tiny date in a corner, or a change in inscription text can be the sole difference between a highly common stamp and a variety valued in the hundreds or thousands of dollars.
Historically, some of the rarest stamps in the world were not discovered by wealthy dealers or lifelong experts, but by curious schoolchildren searching through old envelopes in attics. By maintaining a methodical approach and examining every design element, you can ensure your collection is accurately identified and safely preserved.
Frequently asked questions
How do I tell the difference between a postage stamp and a postage and revenue stamp?
Look closely at the inscriptions, often located near the bottom or on scrolls. For example, North Borneo stamps of 1886 feature the word POSTAGE, while the 1887 version includes POSTAGE & REVENUE on a scroll extending to the design's edge.
What is the safest way to detect watermarks on my stamps?
Place the stamp face down in a dark tray and apply a few drops of commercial watermark fluid, such as Clarity. This fluid evaporates quickly without harming the gum. Avoid using unsafe household solvents.
Can a stamp's watermark determine its catalog value?
Yes. Stamps with identical designs that differ only by the presence, absence, or type of watermark are assigned separate catalog numbers. This distinction can be the sole difference between a common stamp and one valued in the hundreds or thousands of dollars.
How can I quickly organize and identify look-alike stamps?
You can use the StampSnap app to scan your stamp and find a likely match or log it in your digital collection. Always follow up with physical tools, such as a magnifying glass and watermark fluid, to verify the exact variety.