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Front
Mark McGwire
BaseTopps 1991 Chrome · #91C-49 · 2026
PSA 10 $
$37
PSA 10 Pop
—
Gem Rate
—
30D Change
0.0%
Market data as of Jun 14, 2026
Opportunity
45.8
See pricing to unlock Collector, Investor & Speculation scores
Opportunity Score
45.8
8 weighted signals
Scarcity20%
50
Demand15%
50
Value Gap15%
55
Sales Vol.10%
50
Gem Rate10%
50
Momentum10%
30
Supply10%
50
Age10%
20
PSA 10 population data is not yet available for this card. The PSA 10 price is 3.0x PSA 9, which may be elevated for a card with this scarcity profile. Current metrics suggest lower relative priority versus comparable cards.
Market
PSA10 / PSA9
2.98x
Active Listings
—
PSA10 Mkt Cap
—
PSA 10 Price
$37
30D PSA10
0.0%
90D PSA10
—
Raw Price
$2
30D Raw
0.0%
90D Raw
—
Prices by Grade & Grader
| Grade | PSA | BGS | CGC | SGC |
|---|---|---|---|---|
| 10 / Gem | $37 | $48 | $22 | $22 |
| 9.5 | — | $25 | — | — |
| 9 | $12 | — | — | — |
| 8 | $6 | — | — | — |
Population Reports
PSA Population
PSA 10
—
PSA 9
—
PSA 8
—
PSA 7
—
PSA 6
—
PSA 5
—
PSA 4
—
PSA 3
—
PSA 2
—
PSA 1
—
Alternative Population
No BGS or CGC data yet.
PSA Full Grade Breakdown (1–10)
No PSA population data yet
PSA 10 Price
PSA 9 Price
PSA 10 Population
Total Population
Opportunity Score
Active Listings
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Same Set / Product
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Gem Rate—
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Gem Rate—
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PSA10—
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Gem Rate—
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PSA10—
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Gem Rate—
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PSA10—
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Gem Rate—
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Similar Price Range
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PSA10—
Pop—
Gem Rate—
Opportunity
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Pop—
Gem Rate—
Opportunity
44
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PSA10—
Pop—
Gem Rate—
Opportunity
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Hand Cut
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PSA10—
Pop—
Gem Rate—
Opportunity
51
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Err. Mistakenl…
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Pop—
Gem Rate—
Opportunity
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PopHunter surfaces potentially undervalued scarcity and relative value signals. This is not financial or investment advice. Always do your own research before buying, selling, or grading cards.