$22.50
PSA 10 · 35%
Based on 5 sales
$14.71
PSA 9
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The Professor's Research from 25th Anniversary Collection $22.50 in PSA 10 grade. Prices have increased 35% over the past 30 days.
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Price History
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Price by Grade
PSA 9
$14.71
PSA 10
$22.50
Recent Sales
2026-03-29
· raw
· ebay
$3.37
2026-03-20
· raw
· ebay
$2.99
2026-03-16
· raw
· ebay
$1.99
2026-03-14
· raw
· ebay
$1.54
2026-03-01
· raw
· ebay
$3.98
2026-02-17
· raw
· ebay
$4.00
2026-02-14
· raw
· ebay
$1.25
2026-01-30
· raw
· ebay
$2.72
2026-01-18
· psa 10
· ebay
$22.50
2026-01-18
· raw
· ebay
$1.45
2026-01-04
· raw
· ebay
$1.75
2026-01-03
· raw
· ebay
$1.60
2026-01-03
· raw
· ebay
$4.20
2026-01-03
· raw
· ebay
$4.99
2025-12-01
· raw
· ebay
$2.19
2025-11-29
· raw
· ebay
$1.99
2025-11-23
· raw
· ebay
$1.99
2025-11-20
· raw
· ebay
$6.83
2025-11-09
· raw
· ebay
$2.50
2025-11-01
· raw
· ebay
$1.75
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