Autograph value checker & identifier
Point your camera at any signed photo, ball, card, or piece of memorabilia and Minti helps identify the signer and item type, then shows what comparable signed pieces are worth from recent eBay sold listings. Organize it, track it, and sell it, all in one app.
How much is your autograph worth?
Autograph values swing on who signed it, what was signed, and whether the signature is authenticated. Minti checks what comparable signed pieces are actually selling for by pulling values from recent eBay sold listings, so a signed photo, a game-ball, or a signed card each gets an estimate grounded in real sales rather than a wishful asking price.
- Market estimate from recent eBay sold comparable listings
- Comparisons reflect signer, item type, and whether the piece is authenticated
- Track how your estimate changes as the market moves
Identify the signer and the item
Not sure who signed it or how to describe it? Minti's AI reads the item to identify the likely signer and the item type, whether it's a photo, card, ball, or other piece of memorabilia, then helps you place comparable sold examples. Because signatures vary and forgeries exist, treat the signer read as a starting point to confirm with authentication.
- Recognizes signed photos, balls, cards, and other memorabilia
- Suggests the likely signer to compare against known exemplars
- Auto-fills item type and attributes so your entry stays clean
Authentication is everything
With autographs, the signature is only worth what a buyer can trust. A signature confirmed by a trusted third party like PSA/DNA, JSA, or Beckett carries a real premium and sells with confidence. An unauthenticated autograph is hard to value and risky, because buyers cannot be sure it is genuine, so estimates on unverified pieces should be treated with caution. Condition of the signature matters too: a crisp, unfaded signature in a clean spot is worth more than a smudged or faded one. Minti gives you a market estimate based on comparable sales, but it does not authenticate signatures, so authentication remains the single biggest factor in what a piece is truly worth.
Organize your autograph collection
Keep your signed pieces in folders that mirror how you actually collect. Every item carries its images, item type, authentication details, and current estimate, and your portfolio total updates as the market moves, so you always know what your collection is worth.
Buy, sell & auction in the marketplace
When you're ready to trade, list any signed item 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.
Autograph FAQ
How do I find out what my autograph is worth?
Scan the item with Minti. The AI identifies the signer and the type of item, whether it's a signed photo, ball, card, or other memorabilia, then pulls values from recent eBay sold listings so you see what comparable signed pieces are actually selling for. Authenticated autographs typically carry a premium, and Minti gives you a market estimate, not authentication.
Can Minti identify the signer and the item?
Yes. Minti reads the item to identify the likely signer and the item type, such as a photo, card, ball, or other piece, then helps you place comparable sold examples. Because signatures vary and forgeries exist, treat the signer read as a starting point and rely on third-party authentication to confirm it.
Why does authentication matter so much for autographs?
Authentication is everything with autographs. A signature confirmed by a trusted third party like PSA/DNA, JSA, or Beckett carries a premium and sells with confidence, while an unauthenticated autograph is hard to value and risky because buyers cannot be sure it is genuine. Minti gives you a market estimate based on comparable sales, but it does not authenticate signatures.
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 autographs on Minti?
List any signed item 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. Including authentication details helps your item sell for more.