Baseball · Set
Current market values for graded cards from Score Glossy, by grade, from real comparable sales. Track your whole collection — with a 0–1000 protection score and a broker-ready insurance schedule — free.
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![1988 Game Breakers [D. Mattingly, J. Clark] #650](https://i.ebayimg.com/images/g/LZcAAeSwntxp4BXf/s-l500.jpg)
















![1988 Rookie Sluggers [M. McGwire, M. Nokes] #648](https://i.ebayimg.com/images/g/jFwAAeSwr75pkOTf/s-l500.jpg)
Values are informational estimates from recent comparable sales — not a certified appraisal, insurance, or financial advice.