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Roy Campanella card market index

Top gainers1Y

1959 Roy Campanella PSA 10Topps · $5,061+23.55%

Top decliners1Y

1950 Roy Campanella PSA 10Bowman · $23,092-14.00%1955 Roy Campanella PSA 10Bowman · $8,254-5.17%1957 Roy Campanella PSA 10Topps · $9,183-3.43%1954 Roy Campanella PSA 10Bowman · $8,770-3.24%

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 11 most-traded cards in this basket; the recent window covers all 20 tracked cards. Not investment advice.

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