Professor's Research (Professor Oak) #23, Holo, Celebrations
- Card number: #23
- Rarity: Holo Rare
A PSA 9 Professor's Research (Professor Oak) #23 Holo from Celebrations has a TCGBerg fair value of $14 as of Nov 15, 2026. TCGBerg has recorded 38 PSA 9 sales of this card, the latest on Nov 4, 2026. PSA has graded 406 copies at PSA 9.
TCGBerg Algorithm (estimated from recorded sales).
- Population · PSA 9
- 406
- Market cap
- $5.6K
- Volatility
- 3.5%
- YTD
- -
- Sales evidence
- Very strong
TCGBerg fair value · PSA 9
$14
Price history
Weekly fair value for PSA 9. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales.
What the evidence says
The last PSA 9 sale, $9.50 on Nov 4, 2026, sits 30.5% below the $14 fair value. The value weighs 28 PSA 9 sales from the past year, not the latest one alone. Its confidence band runs from $13 to $15. A PSA 10 ($347) is worth 25.4 times a PSA 9 ($14). Over the past 30 days the PSA 9 value has fallen 4.6%.
TCGBerg fair value by grade
Value at each grade and ungraded condition. Log scale. Tap a row to switch the whole page.
- Raw NM$0.27Ungraded · TCGBerg fair value
- Raw MP$0.26Ungraded · TCGBerg fair value
- Raw HP$0.25Ungraded · TCGBerg fair value
- Raw LP$0.20Ungraded · TCGBerg fair value
- Raw Damaged$0.11Ungraded · market price
Behind the scenes
What goes into this price, and how much we know.
Recent sales
20 trackedEach sale against the grade's fair value on the day it sold.
- $0.30Nov 11, 2026 · via tcgplayerRawabove fair value by 11.1%
- $0.24Nov 11, 2026 · via tcgplayerRawbelow fair value by 11.1%
- $0.20Nov 10, 2026 · via tcgplayerRawbelow fair value by 25.9%
- $0.05Nov 10, 2026 · via tcgplayerRawbelow fair value by 81.5%
- $12Nov 6, 2026 · via eBayabove fair value by 8.2%
15 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
Includes a sale 95.5% below fair value
All grades matrix
Every grade we track for this printing. Click any column header to sort; the rightmost column jumps you to listings for that grade.
- $3471d 4.0%7d 41.8%30d 32.5%
- Pop
- 77
- Mcap
- $26.7K
- Evidence
- Moderate
- Last
- $27
- $141d 0.1%7d 1.7%30d 4.6%
- Pop
- 406
- Mcap
- $5.6K
- Evidence
- Very strong
- Last
- $9.50
- $121d 0.1%7d 17.1%30d 12.6%
- Pop
- 352
- Mcap
- $4.4K
- Evidence
- Strong
- Last
- $12
| Listings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| $347 | 77 | $26.7K | down 4.0% | down 41.8% | down 32.5% | down 24.3% | Moderate | $271w ago | ||
| $14 | 406 | $5.6K | down 0.1% | up 1.7% | down 4.6% | up 3.2% | Very strong | $9.502w ago | ||
| $12 | 352 | $4.4K | up 0.1% | up 17.1% | up 12.6% | up 2.8% | Strong | $121w ago | ||
| $9.24 | 118 | $1.1K | down 0.2% | down 1.3% | up 1.2% | down 15.8% | Strong | $8.401mo ago | ||
| $8.65 | 35 | $303 | up 0.1% | down 1.8% | up 2.0% | down 7.6% | Limited | $6.666mo ago | ||
| Raw | $0.27 | - | - | - | down 6.9% | 0.0% | - | Very strong | $0.304d ago |
PSA population report
988 graded copies of Professor's Research (Professor Oak) Holo across 5 grades. The selected grade is highlighted.
PSA 9 makes up 41% of graded copies: 406 of 988. It’s the most common grade for this card.
Analysis
Professor's Research (Professor Oak) - Holo at PSA 10 carries a TCGBerg fair value of $347 as of 2026-11-15. We track a TCGBerg fair value across 5 grades from Celebrations, from PSA 6 up to PSA 10. A graded population of 77 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on moderate sales evidence. Over the past 30 days, the PSA 10 TCGBerg fair value has fallen 32.5%.