Professor's Research (Professor Oak)Celebrations 23/25 price & value
$0.28
up +9.2%4 weeks · Steady
Medium confidence
Medium confidence
How closely the price sources agree, and how often the card trades.
- Sits well below this card's PSA 7 price (9 USD): played or mis-described copies are likely weighing on the ungraded figure
- 46 ungraded in the last 90 days, all conditions
- 35 sales on record listed as near mint
- Last sale Nov 3, 2026
High liquidity82/100
High liquidity
Trades often, at prices that agree. It counts sales, not how long a listing takes to sell.
About 15 ungraded copies sell a month across all conditions, the pace of the last 90 days.
How we measure liquidity →Near mint · UltraBall Market Value · 46 ungraded sales in the last 90 days, all conditions · as of Nov 12, 2026
Graded: PSA 9 $12.73
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Prices updated Nov 12, 2026 · How we calculate the UltraBall Market Value
People ask about this card
- What is Professor's Research (Professor Oak) 23/25 worth raw, in PSA 9 and in PSA 10?
- As of Nov 12, 2026, Professor's Research (Professor Oak) 23/25 is about $0.28 ungraded near mint (46 sales in 90 days); PSA 9 about $12.73 (19 sales); PSA 10: too few sales to price. Every grade’s price.
- Why do two copies of Professor's Research (Professor Oak) 23/25 differ in price?
- As of Nov 12, 2026, there is one printing of Professor's Research (Professor Oak) 23/25, so the gap is condition: near mint is $0.28. Too few played copies have sold to price each condition on its own. Recent sales.
Professor's Research (Professor Oak) 23/25 price over time
- Recorded prices, joined day to day
Ungraded, 1 year: $0.73 on Nov 11, 2025, $0.28 on Nov 12, 2026. Lowest $0.20, highest $0.73.
- Now
- $0.28
- 4 weeks
- +9.2%
- 90 days
- −8.2%
- 1 year
- −63%
- Highest, 1Y
- $0.73
- Lowest, 1Y
- $0.20
Recorded history starts October 2021. Earlier history is monthly averages; from July 22, 2026 the line is a smoothed 7-day average of daily prices, so single-day swings don’t show. Between recorded prices, the line and its daily values are estimated from the prices either side.
Professor's Research (Professor Oak) 23/25 price by month
Ungraded, at the end of each month, newest first: the line above read off at each month’s last day. The latest month ends on today’s UltraBall Market Value.
| Month | Ungraded | Change on month |
|---|---|---|
| November 2026to Nov 12, 2026 | $0.28 | down −15% |
| October 2026 | $0.33 | down −2.9% |
| September 2026 | $0.34 | up +17% |
| August 2026 | $0.29 | up +32% |
| July 2026 | $0.22 | – |
| May 2026 | $0.67 | up +32% |
| April 2026 | $0.51 | down −25% |
| March 2026 | $0.68 | up +3.0% |
| February 2026 | $0.66 | up +55% |
| January 2026 | $0.43 | down −15% |
| December 2025 | $0.50 | down −32% |
| November 2025 | $0.73 | up +11% |
Recent verified sales
RawProfessor's Research (Professor Oak) 023/025 Holo Rare Celebrations Pokemon HPLikely best offer · asking price shownNov 8, 2026 · eBay · Sold as heavy play · View listing · Asking price, up to $1.99asking- RawProfessor's Research [Professor Oak] 023/025 - Celebrations - Pokémon TCG - LPOffers taken · asking price shownNov 7, 2026 · eBay · Sold as light play · Offers taken · View listing · Asking price, up to $1.60asking
- PSA 82021 Pokemon Celebrations Professor's Research: Professor Oak #023/025 PSA 8Nov 6, 2026 · eBay · View listing · $11.50
- RawPROFESSOR'S RESEARCH (PROFESSOR OAK) 023/025 Holo RARE Celebrations Pokemon LPLikely best offer · asking price shownNov 5, 2026 · eBay · Sold as light play · View listing · Asking price, up to $1.49asking
- RawProfessor's Research [Professor Oak] - Celebrations [CLB 023/025]Likely best offer · asking price shownNov 3, 2026 · eBay · Sold as near mint · View listing · Asking price, up to $1.89asking
- RawProfessor's Research (Professor Oak) Rare Celebrations 023/025 NMLikely best offer · asking price shownNov 1, 2026 · eBay · Sold as near mint · View listing · Asking price, up to $1.99asking
- RawProfessor's Research (Professor Oak) 023/025 - Celebrations - Pokemon Card NM/MLikely best offer · asking price shownOct 28, 2026 · eBay · Sold as near mint · View listing · Asking price, up to $1.17asking
- RawProfessor's Research [Professor Oak] Holo Rare Celebrations 023/025 NMLikely best offer · asking price shownOct 26, 2026 · eBay · Sold as near mint · View listing · Asking price, up to $1.19asking
- RawPROFESSOR'S RESEARCH (PROFESSOR OAK) 023/025 POKEMON CELEBRATIONS NEAR MINTOffers taken · asking price shownOct 25, 2026 · eBay · Sold as near mint · Offers taken · View listing · Asking price, up to $2.01asking
- PSA 82021 Pokemon Celebrations Professor's Research: Professor Oak #023/025 PSA 8Oct 20, 2026 · eBay · View listing · $7.50
PSA 10Pokemon Celebrations Professor's Research Professor Oak 023/025 PSA 10Sep 30, 2026 · eBay · Auction · View listing · $270
PSA 7Pokemon Celebrations Professor's Research [Professor Oak] 023/025 Holo PSA 7Sep 27, 2026 · eBay · Offers taken (asking price; paid may be lower) · View listing · Asking price, up to $8.50asking
PSA 82021 Pokemon Celebrations Professor's Research: Professor Oak #023/025 PSA 8Sep 21, 2026 · eBay · Auction · View listing · $10.35
Graded values
Professor's Research (Professor Oak) 23/25 price by grade
| Grade | Market value | 4 wk | Sales/moSales a month | Last sale |
|---|---|---|---|---|
| UngradedMedium. How closely the price sources agree, and how often the card trades. | $0.28 | up +9.2% | 15High liquidity. High | –Medium. How closely the price sources agree, and how often the card trades. |
| PSA 945.5× rawHigh. Many recent comparable sales that agree closely. | $12.73 | 0.0% | No recent sales | –High. Many recent comparable sales that agree closely. |
| PSA 8.544.6× rawLow. Few recent sales in this condition. Treat the figure as a rough guide. | $12.50 | – | No recent sales | –Low. Few recent sales in this condition. Treat the figure as a rough guide. |
| PSA 837× rawMedium. Some recent sales, or sales that vary more than usual. | $10.35Last $11.50 · Nov 6, 2026 | 0.0% | 1Medium liquidity. Medium | $11.50Nov 6, 2026Medium. Some recent sales, or sales that vary more than usual. |
| PSA 731.2× rawHigh. Many recent comparable sales that agree closely. | $8.75Last $8.50 · Sep 27, 2026 | 0.0% | 0.3Low liquidity. Low | $8.50Sep 27, 2026High. Many recent comparable sales that agree closely. |
| PSA 627.8× rawLow. Few recent sales in this condition. Treat the figure as a rough guide. | $7.78Last $4.00 · Sep 7, 2026 | – | 0.3Low liquidity. Low | $4.00Sep 7, 2026Low. Few recent sales in this condition. Treat the figure as a rough guide. |
| CGC 1039.3× rawMedium. Some recent sales, or sales that vary more than usual. | $11.00Last $20.00 · Sep 10, 2026 | – | 0.3Low liquidity. Low | $20.00Sep 10, 2026Medium. Some recent sales, or sales that vary more than usual. |
| BGS 917.9× rawLow. Few recent sales in this condition. Treat the figure as a rough guide. | $5.00 | – | No recent sales | –Low. Few recent sales in this condition. Treat the figure as a rough guide. |
| SGC 1039.3× rawLow. Few recent sales in this condition. Treat the figure as a rough guide. | $11.00 | – | No recent sales | –Low. Few recent sales in this condition. Treat the figure as a rough guide. |
Each graded row counts only that grade's sales; the ungraded row counts every condition. Sales a month is the 90-day pace. Last sale is the latest verified sale, never an asking price. How we calculate the UltraBall Market Value
Showing each company’s top grade. Choose a company above for every grade it has a price for.
Grade it with PSA?
Grade yours from photos →Change the costs, or add your own odds →- If it gets a PSA 9
- −$74.29
- If it gets a PSA 8.5
- −$74.49
- PSA fee for a PSA 9
- $59.99 Standard
- Slab sale price to break even
- $98.36at Standard, $59.99
- Grading pays, at today’s prices
- No priced grade
- Historical PSA 10 rate
- 7.9%
Against selling raw at $0.28, after the PSA fee for what the slab is worth (a 9 goes in at Standard, $59.99; a 8.5 at the same level), $25.00 shipping and insurance, and eBay US selling fees, as the selling calculator works them out, with its usual $5 postage and $1 packing on each sale: the same sum as the selling calculator. Each grade is charged the fee level its own slab price needs, so the break-even price carries the fee for a slab at that price, not the PSA 10 fee. These are outcomes if the card gets each grade, not the chance that it will. PSA has graded 990 copies; 78 got a 10.
Population report990 PSA graded · Grade breakdown and gem rate
Population
- PSA graded
- 990
- +30 in 4 weeks
- PSA 10
- 78
- +1 in 4 weeks
- PSA 9
- 405
- +8 in 4 weeks
- Historical PSA 10 rate
- 7.9%
- PSA 10s of all graded
A higher historical PSA 10 rate than 21% of the Celebrations cards PSA has graded enough of.
| Grader | Graded | 10s | 9s | 10s share |
|---|---|---|---|---|
| PSA | 990 | 78 | 405 | 7.9% |
| CGC | 471 | 86 | 153 | 18% |
| BGS | 78 | 0 | 41 | 0.00% |
| SGC | 19 | 3 | 4 | – |
- PSA graded
- 1,000
- 10s
- 78
- 10s share
- 7.8%
- Historical PSA 10 rate
- 7.8%
Every PSA grade (10)
| Grade | Copies | Share |
|---|---|---|
| 10 | 78 | 7.8% |
| 9 | 406 | 41% |
| 8.5 | 1 | 0.10% |
| 8 | 357 | 36% |
| 7 | 119 | 12% |
| 6 | 35 | 3.5% |
| 5 | 1 | 0.10% |
| 4 | 1 | 0.10% |
| 3 | 2 | 0.20% |
| 2 | 1 | 0.10% |
PSA’s count of Nov 9, 2026. The rate is PSA 10s over every copy PSA has graded.
- CGC graded
- 471
- 10s
- 86
- 10s share
- 18%
- Historical CGC gem rate
- 18%
- Gem: 10s, Pristine and Perfect 10s
Every CGC grade (11)
| Grade | Copies | Share |
|---|---|---|
| 10 | 86 | 18% |
| 9.5 | 30 | 6.4% |
| 9 | 153 | 32% |
| 8.5 | 121 | 26% |
| 8 | 46 | 9.8% |
| 7.5 | 13 | 2.8% |
| 7 | 3 | 0.64% |
| 6.5 | 5 | 1.1% |
| 6 | 3 | 0.64% |
| Authentic, altered | 1 | 0.21% |
| Authentic | 10 | 2.1% |
CGC’s count of Nov 10, 2026. 10s share counts every 10 label; CGC’s own gem is 10s, Pristine and Perfect 10s.
- Beckett graded
- 78
- 10s
- 0
- 10s share
- 0%
- Historical Beckett gem rate
- 13%
- Gem: 9.5s, Pristine and Black Label 10s
Every Beckett grade (6)
| Grade | Copies | Share |
|---|---|---|
| 9.5 | 10 | 13% |
| 9 | 41 | 53% |
| 8.5 | 20 | 26% |
| 8 | 5 | 6.4% |
| 7.5 | 1 | 1.3% |
| 7 | 1 | 1.3% |
Beckett’s count of Nov 10, 2026. 10s share counts every 10 label; Beckett’s own gem is 9.5s, Pristine and Black Label 10s.
- SGC graded
- 19
- 10s
- 3
- 10s share
- –
- Historical SGC gem rate
- –
- Gem: 10s and Pristine 10s
Every SGC grade (7)
| Grade | Copies | Share |
|---|---|---|
| 10 | 3 | 16% |
| 9.5 | 2 | 11% |
| 9 | 4 | 21% |
| 8.5 | 5 | 26% |
| 8 | 3 | 16% |
| 6 | 1 | 5.3% |
| 5 | 1 | 5.3% |
SGC’s count of Nov 10, 2026. 10s share counts every 10 label; SGC’s own gem is 10s and Pristine 10s.
PSA’s population report of Nov 9, 2026; changes are since Oct 12, 2026. CGC, BGS and SGC as of Nov 10, 2026; their 10s include Pristine, Perfect and Black Label 10s. PSA counts the cards it has graded, not every copy that exists. Compare with the low pop cards and the hardest PSA 10s.
PSA 10 price against PSA’s population
The same 16 weeks, Jul 24, 2026 to Nov 9, 2026: the price on the day of each weekly PSA report, and the report’s counts. Side by side, not cause and effect.
Left: PSA 10 price, US$. Right: PSA graded copies.
About this card
Professor's Research (Professor Oak) is card 23 of 25 in the Celebrations price guide, a set released in October 2021 during the Sword & Shield era. Its rarity is Rare Holo. The artwork is by KIYOTAKA OSHIYAMA. In the checklist it sits after Lugia 22/25 and before Professor's Research (Professor Oak) 24/25.
It is the 21st most valuable of the 25 priced cards in Celebrations, behind Mew 25/25 (see the most valuable Celebrations cards).
What the data says
The ungraded value has held within 10% over four weeks (+9.2% on 7-day averages), on 46 ungraded sales in 90 days.
The PSA count grew by 30 between Oct 12, 2026 and Nov 9, 2026, 1 of them a PSA 10.
From prices of Nov 12, 2026 and sales to Nov 3, 2026. Observations, not advice or a forecast. How we read the market
Market snapshot
How each figure is worked out- 4 weeks
- +9.2%ungraded, between 7-day averages
- 90 days
- −8.2%ungraded, between 7-day averages
- 1 year
- −63%ungraded; before Jul 22, 2026 from monthly averages
- Direction
- Steadywithin 10% of four weeks ago, on 7-day averages
- High since daily tracking
- 25% under$0.36 on Sep 24, 2026, 7-day average; daily prices since Jul 22, 2026
- Liquidity
- High15.3 ungraded sales a month over 90 days
- Price confidence
- Medium confidenceSome recent sales, or sales that vary more than usual.
- Ungraded sold
- 13in 30 days; 46 in 90
- PSA 10 population
- 78of 990 PSA graded, count of Nov 9, 2026
- Population change
- +30graded, +1 PSA 10s, Oct 12, 2026 to Nov 9, 2026
- Set
- Celebrations
- Number
- 23/25
- Set code
- CEL
- Rarity
- Rare Holo
- Released
- Oct 8, 2021
- Illustrator
- KIYOTAKA OSHIYAMA
- Printings
- Holofoil
- Celebrations checklistAll 25 cards with prices
- Most valuable Celebrations cardsRanked by ungraded value
- Celebrations chase cardsThe pulls collectors open packs for, with odds where we hold them
- Sword & Shield eraSets and chase cards from February 2020 on
- 2021 Pokémon cardsEvery set released in 2021, with prices
Cite this price
Professor's Research (Professor Oak) 23/25 (Celebrations) is worth $0.28 ungraded as of Nov 12, 2026, according to UltraBall's Market Value (https://ultraball.com/cards/celebrations/professors-research-professor-oak-23).
Professor's Research (Professor Oak) 23/25 (Celebrations) is worth $0.28 ungraded as of Nov 12, 2026, according to UltraBall's Market Value (https://ultraball.com/cards/celebrations/professors-research-professor-oak-23).
https://ultraball.com/cards/celebrations/professors-research-professor-oak-23
<a href="https://ultraball.com/cards/celebrations/professors-research-professor-oak-23">Professor's Research (Professor Oak) 23/25 (Celebrations) price: $0.28 on UltraBall</a>
Nearby in Celebrations
More cards by KIYOTAKA OSHIYAMA
Chase cards from this set
Chase cards from the rest of the era
Questions collectors ask
As of Nov 12, 2026, Professor's Research (Professor Oak) 23/25 Celebrations is worth about $0.28 ungraded. How we price cards.
