Brian Harper Base #142 · Donruss (1984) | PopHunter

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Brian Harper

Name: Brian Harper
Brand: Baseball
SKU: cmqep47la3j68z8140z5ueghg

BaseRC

Donruss · #142 · 1984

eBaySearch Sold comps

PSA 10 $

$24

PSA 10 Pop

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Gem Rate

—

30D Change

0.0%

Market data as of Jun 14, 2026

Opportunity

54.8

Collector

Collector to unlockUpgrade

Investor

Investor to unlockUpgrade

Speculation

Investor to unlockUpgrade

See pricing to unlock Collector, Investor & Speculation scores

How this score is calculated

Opportunity Score

54.8

8 weighted signals

Scarcity20%

Demand15%

Value Gap15%

Sales Vol.10%

Gem Rate10%

Momentum10%

Supply10%

Age10%

100

Score drivers: vintage age (100). PSA 10 population data is not yet available for this card. The PSA 10 price is 2.2x PSA 9, which may be low for a card with this scarcity profile. Signals are mixed — no strong edge indicated at current prices.

Market

PSA10 / PSA9

2.15x

Active Listings

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PSA10 Mkt Cap

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PSA 10 Price

$24

30D PSA10

0.0%

90D PSA10

—

Raw Price

30D Raw

0.0%

90D Raw

—

Prices by Grade & Grader

Population Reports

PSA Population

PSA 10

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PSA 9

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PSA 8

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PSA 7

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PSA 6

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PSA 5

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PSA 4

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PSA 3

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PSA 2

PSA 10 Price

PSA 9 Price

PSA 10 Population

Total Population

Opportunity Score

Active Listings

Similar Opportunities

Same Player

No image

Brian Harper #22 #22

1991 · Donruss

Brian Harper #144 #144

1984 · Topps

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.