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Ken Howell Base #559 · Upper Deck (1990) | PopHunter

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Front

Ken Howell

Base

Upper Deck · #559 · 1990

eBaySearch Sold comps

PSA 10 $

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PSA 10 Pop

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Gem Rate

—

30D Change

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Market data as of Jun 14, 2026

Opportunity

56.0

Collector

Collector score — upgrade to unlock

88.8

Collector to unlockUpgrade

Investor

Investor score — upgrade to unlock

88.8

Investor to unlockUpgrade

Speculation

Speculation score — upgrade to unlock

88.8

Investor to unlockUpgrade

See pricing to unlock Collector, Investor & Speculation scores

How this score is calculated

Opportunity Score

56.0

8 weighted signals

Scarcity20%

50

Demand15%

50

Value Gap15%

70

Sales Vol.10%

50

Gem Rate10%

50

Momentum10%

30

Supply10%

50

Age10%

100

Score drivers: grade price gap (70) and vintage age (100). Raw population data is not yet available for this card. Signals are mixed — no strong edge indicated at current prices.

Market

PSA10 / PSA9

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Active Listings

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PSA10 Mkt Cap

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PSA 10 Price

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30D PSA10

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90D PSA10

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Raw Price

$1

30D Raw

0.0%

90D Raw

—

Prices by Grade & Grader

No pricing data available.

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

Ken Howell #756 #756

1990 · Topps Tiffany

Score factors

Ken Howell #316 #316

1990 · Leaf

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.

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PSA 1

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Alternative Population

No BGS or CGC data yet.

PSA Full Grade Breakdown (1–10)

No PSA population data yet

PSA10—

Pop—

Gem Rate—

Opportunity

51

Score factors

Ken Howell #54T #54T

1989 · Topps Traded

Score factors

Ken Howell #93 #93

1989 · Topps Tiffany

Score factors

Ken Howell #458 #458

1991 · Score

Score factors

Ken Howell #71 #71

1991 · Stadium Club

Score factors

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Checklist 401-500 #500 #500

1992 · Upper Deck

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Randy Johnson: Star Rookie #25

Randy Johnson: Star Rookie #25 #25

1989 · Upper Deck

Score factors

Nolan Ryan #774

Nolan Ryan #774 #774

1989 · Upper Deck

Score factors

Gary Sheffield #13

Gary Sheffield #13 #13

1989 · Upper Deck

Score factors

Dale Murphy #357

Dale Murphy #357 #357

Reverse Negati…

1989 · Upper Deck

Score factors

Nolan Ryan #145

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Similar Price Range

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Serial Numbere…

2000 · Pacific

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