Do You Need Paperwork to Sell Inherited Sports Cards or Memorabilia?
You don't need a certificate to find out what it's worth
If you inherited a card collection, signed jerseys, or other memorabilia and there's no paperwork with it, that's normal. Most family collections were built over decades without anyone keeping receipts. The Binder's AI valuation doesn't require a certificate of authenticity (a document proving an item is genuine) or an old appraisal to give you a starting number. You submit photos and details, and the AI prices it using condition, rarity, and recent sale prices for similar items.
What paperwork actually helps, and when
Some documents do make a real difference, just not for getting priced: Provenance, meaning any proof of where an item came from (a receipt, an old letter, a photo of a relative with the item, a family story you can back up) can support a higher price once a buyer is deciding whether to trust the item's history. A certificate of authentication from a recognized grading or authentication service (like PSA/DNA, JSA, or Beckett) matters more for higher-value autographs and game-used memorabilia, since buyers pay more for that certainty. It's worth doing before you sell a piece you believe is valuable, not before you find out what it might be worth. If you go through a traditional auction house or consignment shop instead, they'll often ask for a signed consignment agreement and may require professional authentication before they'll even list high-value pieces.
What to do if you have zero documentation
Start by getting the valuation anyway. It tells you which items in the collection are worth focusing on, so you're not spending time or money authenticating something with little value. For anything the valuation flags as high-value, that's when it's worth considering professional authentication before you sell it, since it can meaningfully raise what a buyer will pay. Keep whatever family context you do have (who owned it, roughly when, any stories about it) even if it's not a formal document. It costs nothing to write down and can help later.
One more practical note
Once you do sell, keep a simple record of what sold and for how much. That's for your own recordkeeping, not something The Binder needs from you, but sellers are often glad they kept it later. This isn't tax advice; check with a tax professional if you're selling a large inherited collection.