TCGAI.PRO 10.0
Ken Griffey Jr.
#371F664126CE Submit
Ken Griffey Jr. card, TCGAI Score 10.0

Certificate #371F664126CE · Baseball

Ken Griffey Jr.

Topps Series 1 · #HL-12 · 2026

TCGAI Score

10.0

Gem Mint Submit Secondary 10.0

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Estimate, not an official grade.

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Sub-grades, front and back

Each side is scored out of 10. The lowest sub-grade caps the TCGAI Score.

Front of Ken Griffey Jr.
Front
Back of Ken Griffey Jr.
Back
Category Front Back
Centering 10 10
Corners 10 10
Edges 10 10
Surface 10 10
Whitening 10 10
Limiting factor
Centering (10) Gem Mint condition
Centering
Front 51/49 L/R, 52/48 T/B Back 51/49 L/R, 52/48 T/B Measured from the photo

What the AI found

Flaws visible at the photo's resolution. A grader under magnification may find more.

No defects listed at this photo resolution.

Surface

Back The back surface is clean with no print defects or indentations.

Whitening

Front No white paper fiber exposure along the entire perimeter.

Back No white paper fiber exposure along the entire perimeter.

What this card sells for

An estimate from recent listings, not an appraisal. Prices in USD.

Graded 10

$1,000

1 sale

Raw, ungraded

$179

$145 – $229 · 9 listings

Grading premium

+459%

Graded average over raw average

Average sale price by grade
Grade Average Range Sales
10 $1,000 — 1
9 $500 — 1

Estimate from eBay listings after removing bundles, wrong sets and outliers. Small samples move a lot.

About this card

Background compiled from public web sources. Check it before you buy or sell.

Market outlook

Stable Outlook 7/10

The card already has a premium raw market due to player demand and SSP labeling, but the available price data shows a relatively narrow early market centered around a small number of sales and listings. That usually produces short-term volatility followed by stabilization unless grading demand or major collector attention increases.

Next months. Prices are likely to remain volatile but generally supported in the near term, with raw copies likely trading in a broad range depending on condition and seller platform.

Long term. Over 1-3 years, the card should hold collectible appeal if Griffin Jr. remains one of the era-defining stars in the insert market, with best-in-class graded examples likely outperforming raw copies.

History

Ken Griffey Jr. is a Hall of Fame Major League Baseball outfielder best known for his 22-season career with the Seattle Mariners, Cincinnati Reds, and Chicago White Sox, and for becoming one of the most iconic players of the 1990s. His significance in card collecting comes from a combination of elite on-field talent, broad mainstream popularity, and a long history of collectible inserts and parallels that remain in steady demand.

This card was first released in 2026 as part of Topps Series 1, in the Heavy Lumber insert subset, with checklist listing HL-12 Ken Griffey Jr. and the full Series 1 release scheduled for February 11, 2026.

  • HL-12 is identified by market/checklist sources as a 2026 Topps Heavy Lumber Ken Griffey Jr. insert, and Sports Card Investor labels it as SSP.
  • Sports Card Investor reports a raw last sale of $156.10 on 2026-04-18 and a recent raw sale around $140, indicating active short-term market movement.
  • Sports Card Pro shows an ungraded price point of about $75.00, while another retail listing priced the card at $185.00, suggesting a wide range between raw market, retail ask, and sold comparables.

Rarity and print run

Tier
Ultra Rare
Print run
Low
First printed in
2026 Topps Series 1 Heavy Lumber
Demand
High
Supply
Low
  • Identified as an SSP insert by Sports Card Investor.
  • Modern insert appeal is amplified by Ken Griffey Jr.'s strong cross-generational collector base.
  • Limited market history suggests relatively few confirmed sales compared with common base cards.

Collector notes

Condition. Check for corner wear, edge whitening, surface scratches, and centering, with extra attention to any foil or special-stock surface that can show print lines and scuffs easily. Insert cards also often pick up faint roller marks, minor dings, or chipping on edges from packaging and handling.

Storage. Store in a penny sleeve and rigid top loader or semi-rigid holder immediately after opening, and keep the card away from heat, humidity, and direct light. For long-term storage, use a team bag or archival sleeve to reduce dust and friction, and avoid stacking loose insert cards together.

Authenticity. Compare the font, numbering, image quality, and stock finish against verified examples from reputable marketplaces or checklist photos. Because this is a modern Topps insert, obvious warning signs include blurry printing, mismatched gloss, poor trim, incorrect back text, and inconsistent card stock thickness. When buying graded copies, verify the slab certification number and grading-company registry details against the card description.

Sources: sportscardspro.com, sportscardinvestor.com, beckett.com, bombersportscards.com, wnycards.com

Card details

Name
Ken Griffey Jr.
Game
Baseball
Set
Topps Series 1 (HL-12)
Number
HL-12
Year
2026
Rarity
Insert
Language
English
Manufacturer
Topps
Identification
Matched on eBay
Certificate
#371F664126CE
Graded on
Jun 15, 2026
Views
18

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The TCGAI Score is an AI estimate made from photos. It is not an official grade and third-party grades may differ. Not affiliated with any grading company. Read the AI disclaimer.