With a free perf48 account, you can query the database with over 10 filtering criteria, and run analytics on the universe of stamps.
Get a subscription to track your stamps & turn on AI recommendations
Subscribers can track their stamps, run analytics on their collection and get perf48's artificial intelligence, analytics, visualization and next-best stamp recommendation engine.
Track your collection in the cloud
Subscribers indicate which stamps they own, mint vs. used. The stamps are already entered, simply click on which you own.
Earn badges where your collection is strong
As you add stamps to your collection, perf48 automatically highlights where your collection is strong. Earn color-coded badges for a unique visualization of where your collection is strong and complete.
Stamp collection visualization & analytics
perf48's analytics display statistics for each query. Watch your collection grow on your personalized collection dashboard, with perf48's artificial intelligence recommendation engine recommending a collecting strategy for every country.
Artificial Intelligence Recommendation Engines
perf48 analyzes your collection & its artificial intelligence engines automatically make personalized recommendations for the next-best stamps to collect which will enhance your collection most efficiently. Optimize your stamp buying so you purchase strategically and spend your hobby budget wisely. Bring it to a stamp show and as you buy stamps, click on them in perf48 and your next-best stamp recommendations update in real time. With perf48, you hit collection growth milestones more quickly and frequently, which helps you appreciate your collection and the hobby more.
Your want list goes with you anywhere! Subscribers flag stamps to be able to quickly query them later. Use it to flag stamps in lots you receive ("as promised in ad?") or are evaluating ("what's it worth?"/"how much to bid"), want lists, spacefillers, research, come back to later, etc.
We auto-bill US$2.48 per month for access to our ad-free software-as-a-service stamp AI platform. Cancel anytime. Secure & private: we collect a minimum of data & don't send marketing emails.
Save time in identifying stamps (no membership required)
- Instead of browsing to eyeball a stamp from a picture, perf48 enables you to search for a stamp with over ten criteria. Often, searching for a year and denomination, or denomination and topic results in a unique match in just a second or two.
- Use the search filters to help know where to begin looking in a print catalogue used in conjunction with perf48, or validate a stamp found in a print catalogue has no other similar stamps issued with the same denomination, topic, type, etc.
- Quickly identify stamps with a distinct attribute, such as being triangular, in a pair, having an overprint or surcharge, etc.
- Browse the stamp listings to help know how to create piles when doing large sorting jobs at your desk.
- Browse the stamp listings to know how much space to allocate when creating custom stamp album pages.
Understand the stamp universe
- When deciding to start a new country collecting interest, perf48 shows stamp counts, value, how many very expensive or complicated varieties exist.
- Run queries of the database for researching stamp exhibits, philatelic blogs & vlogs, articles, etc.
Save money by buying smarter (membership required)
- When considering bids in auction lots, click on the stamps in the lot using the "flag" feature, and perf48 will display the value, enabling you to make smart bidding decisions. The money saved pays for the subscription many times over.
- When you stumble across an unexpected stamp-buying opportunity, quickly check to confirm if you already own the stamp.
- Assess truth in advertising from mixture advertisements by using the "flag" feature to mark stamps received and compare to value promised.
Confirm what you own using data & analytics (membership required)
- Upon acquiring or inheriting a stamp collection, click on your stamps and see the counts, value, and periods covered.
- When browsing the listings by scrolling on the screen, perf48's badges help you to visualize where you have long consecutive runs of sequential stamps, where those runs end, and instances where adding one set will merge two runs into one long megarun.
- Switch from a paper-based stamp-tracking system to an always-current digital service in the cloud.
Strategize to set goals & grow your collection purposefully & efficiently (membership required)
- Set collecting goals for how complete you aim to get your collection globally and by country.
- People too busy to spend a lot of time on their collections appreciate perf48 automatically recommending the next-best stamps to collect to grow their collection in the most-optimized way possible to reach collecting goals.
- Know when to invest in a given country with a large collection, versus when to switch to buying year sets or individual stamps from a want list. The artificial intelligence engine automatically suggests a personalized best collecting strategy for every country.