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Player index · Updated 2026-08-24

Warren Spahn card market index

99.421W +0.00% · 1M -1.98%
2026-07-262026-08-24
Starting level (29d ago)
101.00
Current level
99.42
Change over 29 days
-1.56%
1M low
96.62
1M high
101.00
Cards tracked
30
Tracked value
$523,696

Value-weighted index, base 100 at the window start: the sum of the basket's observed values against the prior day's, chained daily, each card's move capped so one outlier can't dominate. Values come from real comparable sales resolved on Slabline card pages. The window deepens automatically as history accumulates. Long-run history reflects the 2 most-traded cards in this basket; the recent window covers all 30 tracked cards. Not investment advice.

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