# Devolution Spray (Japanese) #p575620 — Expansion Pack

## Summary

Rare was as high as the slot went in the earliest Japanese expansion, and Devolution Spray carries it in the Expansion Pack set, which reached Japan in October 1996. That puts this Japanese edition more than two years ahead of the English Base Set, where the same Trainer later appeared. A bright yellow spray bottle mists a fine line across a glowing red field, and the effect it printed, stripping evolution cards off your own Pokémon, was a niche play even then. The modelled guide sits at $9.29, up 3% over 30 days on 6 copies traded, with 303 days of inventory on the board; the slab is the real edge, with PSA 10s at $1,158 and a 14% observed gem rate putting about $70 of expected profit per submission.

## Identity

| Field | Value |
| --- | --- |
| Set | Expansion Pack |
| Language | Japanese |
| Number | p575620 |
| Rarity | Rare |
| Era | jp-original |
| Illustrator | Unknown |
| Release date | 1996-10-20 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | TRAINER |
| Finishes | Normal |
| Languages | JA |

## Current stats

- Headline price: **$9.29** (ITEM_MEDIAN; modelled guide price) — as of 2026-11-10
- 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 2026-11-10
- Floor delivered ask: $8.75 — as of 2026-11-09T21:07:55.285Z
- Quant score: 47/100, regime ILLIQUID_UNKNOWN — as of 2026-11-09T21:07:55.285Z — 5 of 11 inputs · 44% weight · -28% confidence

## Provenance

- Catalog — observed 1996-10-20T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-18T06:06:15.555Z, confidence 90%
- Guide price (modelled) — observed 2026-11-10T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-10-18T06:06:14.623Z, confidence 90%
- Confirmed sale — observed 2026-10-13T10:29:57.473Z, confidence 85%
- Inventory count — observed 2026-10-18T06:06:14.623Z, confidence 70%
- Population census — observed 2026-11-08T01:19:30.835Z, confidence 60%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon-japan/expansion-pack/devolution-spray)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~pokemon-japan%3Ajp-23721-p575620%3AJA%3ANORMAL~NM)