Professor's Research

25th Anniversary Collection · #3/28 · None · 2021JPN

$2.27

Market price ▼ 3.8% (30d)

Prices as of Oct 18, 2026

Mirror Holofoil Reverse Holofoil

269graded pop

77%gem rate

9.9×PSA 10 vs raw

-51%off ATH $4.64 · Feb 2024

−$7.70EV to grade — don't

Market data

Printings & price history

Mirror Holofoil▼ 0.4% 7d$2.27

Low $2.26Mid $2.47High $5.00

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Graded market

Graded values

PSA 10 report →updated 2026-10-18

Grade 6 est.$1.89

Grade 5 est.$1.59

Grade 4 est.$1.31

Grade 3 est.$1.09

Grade 2 est.$0.90

Grade 1 est.$0.76

Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.

PSA 10 price history$22.50

PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.

Graded population census · updated 2026-09-18

CGC75 graded · 61 gem 10

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PSA51 graded · 25 gem 10

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Population data from PriceCharting, updated monthly.

How much is Professor's Research #3/28 worth?

A raw copy of Professor's Research #3/28 (25th Anniversary Collection, 2021) is worth about $2.27 right now, based on the latest market data from October 18, 2026. Across the 2 printings we track, copies run anywhere from $2.26 to $5.00 depending on the version you're holding.

Grading changes the math on this one: a PSA 10 is valued around $22.50, roughly 9.9x the raw price, while a PSA 9 sits near $10.00. 75 copies have been graded to date, and 81% of them came back a 10 — worth knowing before you pay grading fees.

These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.

Collecting 25th Anniversary Collection?Full master set guide — every card, chase list, and completion cost→