# Professor's Research #147/172 — Brilliant Stars

## Summary

Professor's Research was the draw Supporter that defined the Sword & Shield years, and this Brilliant Stars printing arrives in a holo treatment that lifts it above the plain reprints. Sanosuke Sakuma is a respected name among illustrators, and demand here comes from players wanting something nicer than a standard copy. A $0.14 modelled guide, down 13% over 30 days on 6 copies traded, says bulk, with 821 days of inventory on the board, and the economics stop there: PSA does not split this card’s population by finish, so no gem rate can be read for it.

## Identity

| Field | Value |
| --- | --- |
| Set | Brilliant Stars |
| Number | 147/172 |
| Rarity | Holo Rare |
| Era | SWSH |
| Illustrator | Sanosuke Sakuma |
| Release date | 2022-02-25 |
| Image | Unavailable |

## Card details

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

## Current stats

- Headline price: **$0.14** (ITEM_MEDIAN; modelled guide price) — as of 2026-11-06
- 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 2026-11-06
- Floor delivered ask: $1.55 — as of 2026-11-06T01:36:13.619Z
- Quant score: 19/100, regime FALLING — as of 2026-11-06T01:36:13.619Z — 3 of 11 inputs · 29% weight · -35% confidence

## Provenance

- Catalog — observed 2022-02-25T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-22T18:36:42.466Z, confidence 90%
- Guide price (modelled) — observed 2026-11-06T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-10-19T14:44:08.321Z, confidence 90%
- Confirmed sale — observed 2026-10-15T04:42:06.360Z, confidence 85%
- Inventory count — observed 2026-10-19T14:44:08.320Z, confidence 70%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/brilliant-stars/professors-research-147)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Aswsh9-147%3AEN%3AHOLO~NM)