# Professor Birch's Observations #159/160 — Primal Clash

## Summary

Professor Birch's Observations was a coin-flip draw Supporter, a gamble that fits the Hoenn-themed Primal Clash and gave it niche tournament appeal rather than staple status. As an Ultra Rare Supporter, it sits in a collector-driven tier, with Hitoshi Ariga's name and the Birch connection carrying most of the pull. The modelled guide sits at $19, up 4% over 30 days on 28 copies traded, with 121 days of inventory on the board; the slab is the real edge, with PSA 10s at $6,150 and a 6% observed gem rate putting about $62 of expected profit per submission.

## Identity

| Field | Value |
| --- | --- |
| Set | Primal Clash |
| Number | 159/160 |
| Rarity | Ultra Rare |
| Era | XY |
| Illustrator | Hitoshi Ariga |
| Release date | 2015-02-04 |
| Image | Unavailable |

## Card details

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

## Current stats

- Headline price: **$19.40** (ITEM_MEDIAN; modelled guide price) — as of 2026-10-31T23:59:27.544Z
- 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 2026-10-31T23:59:27.544Z
- Floor delivered ask: $50.29 — as of 2026-10-31T23:59:27.544Z
- Quant score: 70/100, regime ILLIQUID_UNKNOWN — as of 2026-10-31T23:59:27.544Z — 5 of 11 inputs · 42% weight · -29% confidence

## Provenance

- Catalog — observed 2015-02-04T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-27T09:08:02.726Z, confidence 90%
- Guide price (modelled) — observed 2026-10-31T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-10-27T09:07:59.948Z, confidence 90%
- Confirmed sale — observed 2026-10-18T00:23:03.303Z, confidence 85%
- Inventory count — observed 2026-10-27T09:07:59.948Z, confidence 70%
- Population census — observed 2026-10-12T17:08:11.550Z, confidence 60%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/primal-clash/professor-birchs-observations-159)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Axy5-159%3AEN%3AHOLO~NM)