# Professor's Research (Professor Oak) #023/025 — Celebrations

## Summary

Professor's Research was a near-automatic Supporter in Standard decks, and here it wears Professor Oak's name for the 25th-anniversary party. A holo reprint in a nostalgia-driven set, it appeals to players wanting a staple and to Kanto-era collectors who still remember Oak's original face. The modelled guide sits at $0.28, down 28% over 30 days on 142 copies traded, with 518 days of inventory on the board; a PSA 10 brings $350, 1,250 times raw, but a 8% gem rate against $85 of fees makes grading a losing trade.

## Identity

| Field | Value |
| --- | --- |
| Set | Celebrations |
| Number | 023/025 |
| Rarity | Holo Rare |
| Era | SWSH |
| Illustrator | KIYOTAKA OSHIYAMA |
| Release date | 2021-10-08 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | TRAINER |
| Subtype | Supporter |
| Regulation mark | D |
| Legal | Standard no · Expanded yes |
| Finishes | Holo |
| Languages | EN |

## Current stats

- Headline price: **$0.28** (ITEM_MEDIAN; modelled guide price) — as of 2026-10-19T22:11:51.658Z
- Headline basis: MODELLED_GUIDE — The venue’s published daily market guide, which the venue itself declares MODELLED. Nothing is confirmed to have traded at it, no copy is listed at it, and it is not our estimate — it is theirs.
- 24h change: n/a · 7d change: n/a — as of 2026-10-19T22:11:51.658Z
- Floor delivered ask: unavailable (no depth coverage).
- Quant score: 54/100, regime MARKUP — as of 2026-10-19T22:11:51.658Z — 5 of 11 inputs · 52% weight · -24% confidence

## Provenance

- Catalog — observed 2021-10-08T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-16T16:01:18.544Z, confidence 90%
- Guide price (modelled) — observed 2026-10-19T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-09-29T11:02:04.533Z, confidence 90%
- Confirmed sale — observed 2026-09-29T08:50:14.607Z, confidence 85%
- Inventory count — observed 2026-09-29T11:02:04.532Z, confidence 70%
- Population census — observed 2026-10-18T22:23:46.897Z, confidence 60%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/celebrations/professors-research-professor-oak-23)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Acel25-23%3AEN%3AHOLO~NM)