# Mewtwo #20/165 — Expedition Base Set

## Summary

Mewtwo sits near the top of the fan hierarchy for Gen I, and Expedition's holo treatment kept it a mid-tier pull in a set known for scarce foils. Kimiya Masago is a name WOTC-era collectors recognize, and its Psychic attack is a nod to the original Base Set Mewtwo. At a $480 modelled guide, with 7 copies traded in 30 days, this printing is almost entirely collector premium, since the same card plays for $0.37 out of Stellar Crown; PSA does not split this card’s population by finish, so no gem rate can be read for it.

## Identity

| Field | Value |
| --- | --- |
| Set | Expedition Base Set |
| Number | 20/165 |
| Rarity | Holo Rare |
| Era | WOTC |
| Illustrator | Kimiya Masago |
| Release date | 2002-09-15 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | POKEMON |
| Stage | Basic |
| HP | 70 |
| Types | Psychic |
| Attack: Hypnosis | cost Colorless — Flip a coin. If heads, the Defending Pokémon is now Asleep. |
| Attack: Psychic | cost Psychic/Psychic/Colorless — damage 20+ — This attack does 20 damage plus 10 more damage for each Energy card attached to the Defending Pokémon. |
| Weakness | Psychic x2 |
| Retreat | 2 |
| Legal | Standard no · Expanded no |
| Pokédex entry | [Mewtwo #150](https://cardboardalpha.com/pokemon/pokedex/mewtwo) |
| Finishes | Holo, Reverse Holo |
| Languages | EN |

## Current stats

- Headline price: **$479.53** (ITEM_MEDIAN; modelled guide price) — as of 2026-11-12
- 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 2026-11-12
- Floor delivered ask: $414.27 — as of 2026-10-02T21:38:46.543Z
- Quant score: 30/100, regime ILLIQUID_UNKNOWN — as of 2026-11-11T22:49:42.230Z — 3 of 11 inputs · 25% weight · -35% confidence

## Provenance

- Catalog — observed 2002-09-15T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-03T09:10:46.300Z, confidence 90%
- Guide price (modelled) — observed 2026-11-12T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-09-02T15:00:47.783Z, confidence 70%
- Inventory count — observed 2026-10-21T23:06:55.976Z, confidence 70%
- Population census — observed 2026-09-12T03:54:03.785Z, confidence 60%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/expedition-base-set/mewtwo-20)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Aecard1-20%3AEN%3AHOLO~NM)