Investing • 8 min read
Beyond the Slab: Investing in Game-Used Memorabilia & Raw Gems
Slabs aren't the whole market. How to authenticate game-used pieces, find undervalued raw cards, and avoid the fakes that circulate at every show.

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Authenticating Game-Used Memorabilia
Video coming soon — footage from the next show will appear here.
The slab market is efficient and crowded. Game-used memorabilia and raw vintage are where knowledge still beats capital.
Authenticating game-used pieces
- ★Demand a photo-match or a team/league LOA, not just a dealer's word.
- ★Check tagging: era-correct manufacturer tags, size flags and year tags.
- ★Look for honest wear — repairs, pilling and stains are good signs.
- ★Serial numbers on modern jerseys should trace back to the issuing program.
Where raw still pays
- ★Centered, clean-cornered commons of star rookies in mid-grade.
- ★Regional and food-issue sets that never got graded in volume.
- ★Undervalued vintage cards from 1970s high-number series.
- ★Pack-fresh modern that pre-screens strong on all four corners.
Red flags: a jersey priced far under comparable sales, a LOA from an authenticator nobody can look up, and a seller who will not let you photograph the item.
Buying raw with grading intent? Run it against the on-site grading checklist before you commit.
Game-used jerseys Denverraw card investingsports memorabilia authenticationundervalued vintage cards
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