# Professor's Research (Japanese) #403 — SI: Start Deck 100

## Summary

Japanese collectors got this Professor's Research in December 2021 through Start Deck 100, a product built for the franchise's anniversary celebration, and the Japanese edition ran well ahead of the English Brilliant Stars release in February 2022. Professor Oak-style Supporters are the draw: the gray-haired professor stands in a bookshelf-lined study holding a green book, brow furrowed. It is a plain trainer slot, valued for play and completeness.

## Identity

| Field | Value |
| --- | --- |
| Set | SI: Start Deck 100 |
| Language | Japanese |
| Number | 403 |
| Rarity | Unknown |
| Era | jp-swsh |
| Illustrator | Unknown |
| Release date | 2021-12-17 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | TRAINER |
| Finishes | Normal, Reverse Holo |
| Languages | JA |

## Current stats

- Headline price: unavailable (insufficient data).
- 24h change: n/a · 7d change: n/a
- Floor delivered ask: unavailable (no depth coverage).
- Quant score: 65/100 — 1 of 11 inputs · 11% weight · -35% confidence

## Provenance

- Catalog — observed 2021-12-17T00:00:00Z, confidence 98%
- Live ask — observed 2026-11-07T12:49:57.527Z, confidence 90%
- Price statistic — observed 2026-11-07T12:49:56.861Z, confidence 90%
- Inventory count — observed 2026-11-07T12:49:56.861Z, confidence 70%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon-japan/si-start-deck-100/professors-research)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~pokemon-japan%3Ajp-23859-403%3AJA%3ANORMAL~NM)