How to Value a Baseball Card Collection (or Any Sports Cards)

Step 1: How should you sort a collection before pricing it?

Sort by sport, then by decade, then by set if you can, because pricing an unsorted box card by card wastes hours on cards worth pennies. You'll quickly see what you're dealing with, and the cards that stand out will start to jump out at you.

• Before 1980: check these carefully, even if they're worn.
• 1980 to 1986: mixed, with some valuable rookies among plenty of modest base cards.
• 1987 to 1994: the junk wax era. Most base cards are bulk, though key rookies in top condition and certain errors are exceptions.
• 1995 to today: look for inserts, parallels, serial numbers, autographs and memorabilia cards.

For more on what each era is usually worth, read are my old sports cards worth anything?

Step 2: Which cards carry a collection's value?

A small group carries most of the value: stars and Hall of Famers, true rookie cards, low print runs, parallels, autographs and cards in strong condition.

Go through each pile and pull out cards that match the clues in how to tell if a sports card is valuable: star or Hall of Fame players, true rookie cards, low print runs, parallels, autographs and strong condition. Sleeve these as you go. In most collections this pile is a few percent of the total, sometimes less.

Graded cards are the easy part. Look up the certification number on the grader's website to confirm the grade, then price the slab.

Step 3: How do you price the key cards?

For each key card, find recent sold prices for the same card, the same version and similar condition. eBay's sold listings are the biggest public record, and our guide to pricing sports cards on eBay shows how to search them. Work from the middle of recent sales, not the highest one. Be honest about condition, because a raw card with soft corners won't sell like a sharp one.

Step 4: How do you value bulk cards?

Commons and base cards sell by the lot, not individually. Dealers often price bulk by the box or by the thousand, and offers for junk wax era commons are low because supply is enormous. Sorted bulk, such as complete sets or team lots, tends to sell better than a random box. Count roughly how many cards you have and treat that number as a small add-on to the value of your key cards.

Step 5: Do you need a professional appraisal?

For most collections, your own research is enough. A paid appraisal is worth considering for insurance, estate paperwork or a large vintage collection where a few cards could be worth thousands. Ask how the appraiser is paid, and be wary of anyone who appraises a collection and then offers to buy it.

Can a scanner help you value sports cards faster?

Yes. If you're working out how to value sports cards quickly, scanning cuts most of the lookup time out of steps 2 and 3. With Sports Card Value Scanner you scan each card, check its year, set and reference price range, and save it to My Collection. The collection screen shows the combined value of your saved cards and how many cards and players you have. When you're done, export the list of scanned cards to a file to keep a record for insurance or an appraiser.