A Quick Guide to Perforation Gauges and How to Use Them in Stamp Collecting
As a stamp collector, you’ve probably noticed that tiny perforations (perfs) line the edges of many stamps. These perfs are more than just a way to separate individual stamps—they play a vital role in identifying and classifying them. But how do you know which perf is which? That’s where a perforation gauge comes in handy.
What Is a Perforation Gauge?
A perforation gauge is a tool used to measure the number of perforation holes along the edge of a stamp within a space of 2 centimeters. It provides a precise measurement of a stamp’s perforations, which can differ between issues and even between varieties of the same stamp.
The perforation measurement is expressed as a number, such as “Perf 10” or “Perf 12.” This number tells you how many perforation holes fit into the 2 cm length. Different stamps have different perforation counts, and identifying these correctly can make all the difference in assessing a stamp’s authenticity and value.
Why Perforation Measurement Matters
Perforation measurements can help you determine whether a stamp is rare or from a particular printing. For instance, a small change in the perforation count might indicate a difference in print run or even point to an error that makes the stamp more collectible.
Some classic stamps, for example, were issued in both imperforate (no perforations) and perforated varieties, and the perforation measurement can help differentiate between them. Knowing how to use a perforation gauge allows you to uncover these distinctions and make informed decisions about your collection.
How to Use a Perforation Gauge
Using a perforation gauge is simple once you understand the process. Here’s a step-by-step guide:
- Get Your Perforation Gauge: Perforation gauges are usually plastic or cardboard tools with rows of perforation patterns printed on them. These patterns match different perforation counts, typically ranging from around Perf 8 to Perf 12.
- Align the Stamp: Place your stamp under the perforation gauge, so the perforations on the stamp line up with one of the printed rows of perforations on the gauge.
- Match the Perforations: Slide the stamp along the gauge until you find a perfect match—where the perforation holes of the stamp align exactly with those on the gauge.
- Read the Measurement: Once you find the match, note the number next to the perforation pattern. This is the stamp’s perforation gauge measurement. For example, if the stamp’s perforations line up with the row marked “Perf 12,” then you know the stamp has 12 perforations per 2 cm.
Tips for Accurate Measurement
- Lightly Hold the Stamp: When matching your stamp to the perforation gauge, avoid pressing down too hard. Just lightly place the stamp on the gauge so you can clearly see how the perforations align.
- Check Multiple Edges: For more precision, check the perforations along multiple sides of the stamp. Some stamps have different perf counts on horizontal and vertical sides, which is a critical detail for identifying certain issues.
- Use a Transparent Gauge: Transparent plastic perforation gauges are popular because they allow you to see the stamp clearly while lining up the perforations. This can make it easier to ensure you’re getting an accurate measurement.
The Importance of Accuracy
Perforation variations can seem minor but are often significant when it comes to collecting. For instance, a small difference in perf measurement could indicate that a stamp belongs to a different issue year or even represent a scarce variety. Accurately measuring your stamps’ perforations can help you avoid confusion, ensure authenticity, and potentially uncover hidden gems in your collection.
Using a perforation gauge is an essential skill for any stamp collector. It helps you identify and authenticate stamps based on their perforations, making it easier to classify them and assess their value. So next time you add a new stamp to your collection, be sure to grab your perforation gauge and measure those tiny perfs—you might just discover something special!
Find more supplies to enhance your collecting experience here.