Computer Error 16 / 53 Pokemon Card from Wizards Black Star Promos Set

About the Computer Error Trainer Card

Computer Error is a Rocket's Secret Machine Trainer card from the Wizards Black Star Promos set, part of the Base series. It carries the collector number 16/53 and is classified as Promo. The Wizards Black Star Promos set was released on July 1, 1999.

Computer Error Trainer Card Details

Card name: Computer Error

Card number: 16/53

Set: Wizards Black Star Promos

Series: Base

Rarity: Promo

Card type: Trainer (Rocket's Secret Machine)

Artist: Sumiyoshi Kizuki

Release date: July 1, 1999

Why Collect the Computer Error Trainer Card?

Computer Error is most often collected as part of a complete Wizards Black Star Promos set rather than as a standalone chase card.

Across the hobby, collectibility generally comes down to rarity, condition, artwork, and overall demand for the set.

Artwork and Illustration of the Computer Error Trainer Card

Computer Error was illustrated by Sumiyoshi Kizuki.

Artwork is one of the factors collectors weigh when deciding which copies to keep or send for grading.

Market Price and Value of the Computer Error Trainer Card

The current aggregated market price for Computer Error is about $5.79. Recent listings range from roughly $3.49 (low) to $45.58 (high), with a mid-point near $5.71. These figures are aggregated from marketplace data and change over time; the live price and full price history are shown above on this page.

For context, the Wizards Black Star Promos set has a median card value near $44.16 and an average near $99.73, so this card sits below the typical card in the set. The aggregated price has moved -50% over the last 7 days and +2% over 30 days.

Pokémon cards are best collected for enjoyment first. Where value matters, it is typically driven by graded population, the popularity of the Wizards Black Star Promos set, the availability of sealed product, and broader Pokémon TCG market trends.

Grading the Computer Error Trainer Card

Whether Computer Error is worth grading comes down to condition. Before submitting a card, collectors usually check front and back centring, corner sharpness, edge wear, surface defects, and any print lines or factory imperfections.

Across the hobby, top grades such as PSA 10, BGS/Beckett 9.5–10, and CGC Pristine 10 generally command a premium over raw or lower-graded copies.

PSA has graded 1,995 copies of this card, of which 754 earned a PSA 10 — a gem rate of about 37.8%. These population figures were last refreshed on June 15, 2026. Population counts only rise as more copies are submitted, so the gem rate and totals shift over time; nothing here is estimated or back-filled.

How Rare Is the Computer Error Trainer Card?

Computer Error carries the Promo rarity, which determines how frequently it appears in booster packs.

Population data is one concrete measure of scarcity: PSA has graded 1,995 copies to date.

Final Thoughts on the Computer Error Trainer Card

The Computer Error trainer card is a Promo card from the Wizards Black Star Promos set (Base series). It is a straightforward addition for collectors completing the Wizards Black Star Promos set. Its current aggregated market price is about $5.79; the live figure and full price history appear above on this page.

Frequently asked questions