# Master Ball #143/165 — Expedition Base Set

## Summary

Master Ball is a Trainer from the Expedition era, a deck-searching effect that pulled a Pokémon from the top seven cards rather than guaranteeing one. It was a decent consistency tool of its day, but as an uncommon it was never a chase pull, so interest stays modest and mostly nostalgic. At a $2.19 modelled guide, down 6% over 30 days on 53 copies traded, with only 33 days of inventory on the board, 31% of this printing’s price is collector premium, since the same card plays for $1.51 out of Temporal Forces; 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 | 143/165 |
| Rarity | Uncommon |
| Era | WOTC |
| Illustrator | Keiji Kinebuchi |
| Release date | 2002-09-15 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | TRAINER |
| Types | Metal |
| Legal | Standard no · Expanded no |
| Finishes | Normal, Reverse Holo |
| Languages | EN |

## Current stats

- Headline price: **$2.19** (ITEM_MEDIAN; modelled guide price) — as of 2026-11-11
- 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 2026-11-11
- Floor delivered ask: $2.99 — as of 2026-11-11T13:37:48.076Z
- Quant score: 32/100, regime FLOOR_FORMING — as of 2026-11-11T13:37:48.076Z — 4 of 11 inputs · 40% weight · -30% confidence

## Provenance

- Catalog — observed 2002-09-15T00:00:00Z, confidence 98%
- Live ask — observed 2026-11-08T05:11:06.303Z, confidence 90%
- Guide price (modelled) — observed 2026-11-11T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-11-08T05:11:03.238Z, confidence 90%
- Confirmed sale — observed 2026-10-19T02:43:21.333Z, confidence 85%
- Inventory count — observed 2026-11-08T05:11:03.238Z, confidence 70%
- Population census — observed 2026-09-09T22:22:59.744Z, confidence 60%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/expedition-base-set/master-ball-143)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Aecard1-143%3AEN%3ANORMAL~NM)