# Mewtwo [Inverted Stamp Error] #3 — resale value

Source: JunkPal price guide — https://junkpal.ai/products/mewtwo-inverted-stamp-error-3-pokemon-promo-card

**Mewtwo [Inverted Stamp Error] #3** is worth about **$1,260** ungraded, based on real closed eBay sales.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/mewtwo-inverted-stamp-error-3-pokemon-promo-card

## Value by tier

| Condition | Value (USD) |
| --- | --- |
| Ungraded | $1260 |

Values are medians of real closed eBay sales, updated 2026-08-02. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DMewtwo%2520Inverted%2520Stamp%2520Error%2520Pok%25C3%25A9mon%2520Promo%2520Card%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DMewtwo%2520Inverted%2520Stamp%2520Error%2520Pok%25C3%25A9mon%2520Promo%2520Card%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

## Details

| Field | Value |
| --- | --- |
| Brand | Pokémon |
| Set | Pokémon Promo |
| Card number | #3 |
| Publisher | Nintendo |

## Mewtwo [Inverted Stamp Error] #3 (Pokémon Promo) card value

An ungraded **Mewtwo [Inverted Stamp Error] #3** from Pokémon Promo averages around $1260. A Grade 9 copy runs about null, and a PSA 10 gem-mint commands null.

### What drives the price

Centering, corners, edges, and surface decide a card's grade — and the grade decides the price. The jump from raw to PSA 10 can be 5–20×, so condition is everything. Holos, first editions, and shadowless prints carry the biggest premiums.

## FAQ

**What is the current estimated value of this Mewtwo promo?**

The ungraded Mewtwo [Inverted Stamp Error] #3 is valued at $1260.

**Is this item part of a specific Pokémon set?**

This item is categorized as a Pokémon Promo.

**What game is this collectible associated with?**

This Pokémon Promo is associated with the Pokémon game franchise.

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Full price guide: https://junkpal.ai/products/mewtwo-inverted-stamp-error-3-pokemon-promo-card
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-08-02, based on real sold listings (junkpal.ai)"