Brock's Onix - Gym Heroes (Common) [69/132]

Name: Brock's Onix - Gym Heroes (Common) [69/132]
Brand: The Collector
Availability: LimitedAvailability

A slabbed Brock's Onix Pokémon card from the Gym Heroes set, graded Pristine 10 by Pi Grading, showing front and back views. - view 1

1/3

Estimated value

$45 - $85

Rarity

Ordinary(3/10)

COLLECTOR'S BREAKDOWN: BROCK'S ONIX - GYM HEROES (COMMON) [69/132]

An encapsulated English-language Pokémon card from the year 2000, featuring the Gen 1 Rock-type Onix. The artwork by Ken Sugimori displays the 'Rock Snake Pokémon' mid-shout against a purple and orange sunset-hued background. This specific card represents the signature Pokémon of Pewter City Gym Leader Brock, indicated by the 'Gym Heroes' set symbol and Brock's icon in the bottom right corner.

CULTURAL CARD LORE

Where This Object Echoes

Japanese MythologyEdo Period

Onix echoes the Earth-shaking power of the Jinshin-mushi or Namazu, giant subterranean creatures that caused earthquakes.

Ritual & Ceremonial Use

•Competitive tournament play and local gym challenges within the Pokémon TCG community structure.

Meaning Through Time

2000

Primarily a game piece for schoolyard competitive play.

2020s

A nostalgic financial asset and archival collectible representing the 'Golden Age' of Pokémon cards.

CARD HISTORY & PRINT RUNS

Released in August 2000 by Wizards of the Coast, the Gym Heroes expansion was the first to introduce 'Owner's Pokémon,' reflecting the competitive teams found in the Kanto region gyms. This Onix is a cornerstone of the 'Brock' theme deck, symbolizing the high-defense strategy characteristic of ...

COLLECTOR INTEL

Onix's design was inspired by the Japanese 'Tsuchinoko' and heavy construction equipment, reflecting its role as a geological powerhouse.

The Gym Heroes set was the first to feature the 'Gym Leader' rarity symbol—a small gym badge icon—replacing the standard rarity symbols for certain cards.

HOW SCARCE IS IT?

Ordinary40-55%

CommonLegendary

Standard antiques commonly found at estate sales and flea markets. Plentiful supply meets modest demand.

Typical Characteristics

Moderate production runs
Common at estate sales
Entry-level collectibles

Confidence Factors

Wizards of the Coast copyright dates (1999-2000) are accurate to the set.
Set symbol and card numbering align with Gym Heroes 69/132.
Third-party encapsulation provides a verified secondary layer of authentication.

How does authenticity detection work?

GRADING EXPERT'S TAKE

Trading Card Market Analyst

Card Specialist

Identification is near-certain due to high-quality images of both sides and visible third-party grading information that aligns with the user's provided context.

KEY EVIDENCE

1Correct Gym Heroes set logo (fist with a star) present on the right-middle border.
2Pi Grading slab serial 00024779 provides a verifiable record of condition.
3Text font and energy symbol alignment (Fighting/Colorless) match authentic WotC print runs.
4Yellow border thickness is consistent with late-era Wizards of the Coast production.

WHAT WOULD IMPROVE CERTAINTY

→Verify the grading company certificate in an online database for secondary validation.
→Check for any internal 'Newton Rings' (oil-slick light refraction) between the slab and card surface.

CONDITION & GRADE

Condition

Slabbed and graded as 'Pristine 10' by Pi Grading. Visual inspection confirms exceptionally sharp corners and clean edges with no visible whitening on the reverse.

Surface

Non-holographic matte surface protected within a sonic-welded acrylic slab; the card stock shows the classic Wizards of the Coast slight semi-gloss finish.

Weight & feel

The slabbed unit has a substantial, rigid feel typical of modern archival protective cases, weighing approximately 50-60 grams.

TRADING CARD MARKET VALUE

$45 - $85

Updated: Apr 11, 2026

Who buys this

Nostalgia-driven Pokémon collectors focusing on high-grade 'WotC era' sets and fans of Gym Leader specific sub-collections.

What increases value

•The 'Pristine 10' grade significantly premiums this card over its raw 'Common' value.
•Growing interest in 'Gym Leader' sets (Heroes/Challenge) relative to standard base sets.

What lowers value

•Pi Grading is a less liquid/established brand compared to PSA or BGS, which may limit the ceiling price.
•Common cards (non-holo) have lower long-term price stability compared to Holofoil rares.

What makes top-tier examples

•Perfect 50/50 centering
•Complete absence of silvering on the front edges
•No internal slab moisture or clouding

Grade & condition

Surface scratches, corner wear, and side-to-side centering (visible on the front yellow borders).

Rarity & demand

OrdinaryModerate demandModerate liquidity

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For informational purposes only, not a formal appraisal.

YOUR INPUT VS. SCANNER FINDINGS

How your provided context compares with Curiosa.com scanner findings.

What Aligned

User's 2000 time period aligns perfectly with the Gym Heroes release and the card's copyright text.
User's 'Mint' condition claim is validated by the 'Pristine 10' third-party grade visible in the image.