Wildcard → Lag Board → Barry Sanders
Barry Sanders vs Jerry Rice
1989 Score #257 against 1986 Topps #161 — measured, not predicted.
Not currently priced Same era Football
- Ratio now
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- Baseline
- not established yet
- Vs baseline
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- Observations
- 0
- Jerry Rice, 30d
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- Barry Sanders, 30d
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Not enough observations to draw a history yet. The index records one ratio per pairing per scan; this chart appears once there are at least two.
Every recorded observation
Why these two
Two of the most collected skill-position rookies of the late-1980s window, where the market is condition rather than scarcity — both cards are known for border chipping that keeps high grades scarce.
What would make this wrong
Junk-wax-era print runs mean supply can arrive at any time. A rising population report compresses a ratio without anyone's demand having changed, which is a compression that means nothing.
How this is measured
Each scan records one number: the fair value of Barry Sanders's 1989 Score #257 divided by the fair value of Jerry Rice's 1986 Topps #161, both from comparable sales. The baseline is the median of those observations over 90 days — excluding the most recent 21, so a fresh move cannot drag down the very number it is being measured against. Below 8 observations there is no baseline and this page says so instead of showing one.
The baseline is never authored. It is the median of what was recorded, or it does not exist. Nobody types a target ratio into this system.
This is an observation about a historical relationship, not a forecast. A gap that never closes means the market permanently re-rated Barry Sanders rather than temporarily forgot him — that is the risk in every pairing here, and it does not mean-revert on a schedule.