Stamp value checker & identifier
Point your camera at any postage stamp and Minti identifies the country, denomination, and issue, helps place it to a catalog number, and shows what it's worth from live eBay listing data. Record it, track it, and sell it, all in one app.
How much is your stamp worth?
Book prices go stale the moment they're printed. Stamp values in Minti come from live eBay listings, the app's only price source for stamps. Minti matches your exact issue, drops the outliers, and shows a low, average, and high range, so a classic definitive, a commemorative set, or a hard-to-place foreign issue each get a current value you can check for yourself.
- Every comparable eBay listing shown, plus a one-tap link to eBay's sold history
- Used and mint pricing so you can see how condition changes the number
- Price history across 7-day, 1-month, 3-month, 6-month, and 1-year windows, with Pro
Identify any stamp in seconds
Not sure what you're holding? Minti's AI reads the design, country, denomination, and inscriptions to identify the issue and helps place the stamp to a catalog number, and it flags notable varieties and errors. No manual page-by-page searching.
- Recognizes the country, denomination, and issue from the design
- Helps place the stamp to a catalog number so you know which issue you have
- Flags notable varieties and errors that change the value
What condition means for stamps
With stamps, condition is often the whole story. Two copies of the same issue can be worth very different amounts depending on how they present, so Minti records the factors collectors actually judge.
- Centering: how evenly the design sits within the margins, from off-center to perfectly balanced
- Gum: mint never hinged (MNH) commands the most, followed by hinged, then no gum or used
- Perforations: full, intact perforation teeth versus short, pulled, or trimmed perfs
- Cancellations: on a used stamp, a light, clean, or dated cancel reads better than a heavy smudge, and some cancels add interest
Grade Check for stamps reads your photos, estimates condition, and predicts a likely grade, so you can decide whether an issue is worth submitting before you pay the fee. It is metered: 10 checks a month on Pro and 100 on Collector, with a locked preview on the free tier.
Organize your stamp collection
Keep your stamps in albums and folders that mirror how you actually collect. Every item carries its images, condition, issue details, and current value, and your portfolio total updates as the market moves, so you always know what your collection is worth.
- Set Tracker turns a set into a checklist, showing which stamps you own, which are missing, your completion percentage, and what the rest would cost to finish. Free on every tier.
- Profit and loss tracking, so you can see what you paid against what a stamp is worth, plus realized profit after fees
Buy, sell & auction in the marketplace
When you're ready to trade, list any stamp as a fixed-price Buy It Now or a live auction with anti-snipe extensions. Make and receive offers, accept secure payment through Stripe, and ship with a pre-paid label. Funds are held safely until the buyer confirms delivery.
Stamp FAQ
How do I find out what my stamp is worth?
Scan the stamp with Minti. The AI identifies the country, denomination, and issue, then pulls live eBay listings for similar stamps, drops the outliers, and shows every comparable it used, with a one-tap link to eBay's sold history to double-check.
Can Minti identify the country, issue, and catalog number?
Yes. Minti reads the design, country, denomination, and inscriptions to identify the issue and helps place the stamp to a catalog number, and it flags notable varieties and errors that change the value.
Does condition like gum and centering matter?
Yes, a lot. Centering, gum condition such as mint never hinged versus hinged, intact perforations, and whether a stamp is used or mint all move the value significantly, and a light or favorable cancellation can matter too. Minti records these condition factors on every item.
Is Minti free to use?
Yes. Minti is free to download and includes a monthly allowance of AI scans, plus organizing, value tracking, and marketplace access. Paid tiers raise the scan and storage limits for larger collections.
How do I sell stamps on Minti?
List any stamp as a fixed-price Buy It Now or a live auction, receive offers from buyers, and accept secure payment through Stripe. Minti generates a pre-paid shipping label and holds funds until the buyer confirms delivery.