Wildcard → Lag Board → Mario Lemieux
Mario Lemieux vs Wayne Gretzky
1985-86 O-Pee-Chee #9 against 1979-80 O-Pee-Chee #18 — measured, not predicted.
Not currently priced Same era Hockey
- Ratio now
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- Baseline
- not established yet
- Vs baseline
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- Observations
- 0
- Wayne Gretzky, 30d
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- Mario Lemieux, 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
The two franchise rookie cards of hockey's modern era, from the same product line six years apart, bought by the same collector. Note both are O-Pee-Chee rather than the Topps versions that share their card numbers.
What would make this wrong
Hockey has the thinnest comp pool of any sport in this file, so both legs of this ratio are noisy month to month and a quiet month can look like a move.
How this is measured
Each scan records one number: the fair value of Mario Lemieux's 1985-86 O-Pee-Chee #9 divided by the fair value of Wayne Gretzky's 1979-80 O-Pee-Chee #18, 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 Mario Lemieux rather than temporarily forgot him — that is the risk in every pairing here, and it does not mean-revert on a schedule.