Major League Baseball team card guide

Most valuable Seattle Mariners cards tracked by CollectAIO

Exact card-and-grade values backed by qualifying sold comps. Raw and graded cards stay separate, and ask-only prices do not enter these rankings.

31 exact cards associated14 cards currently qualifyUpdated 8/31/2026

Current sold-backed values

Most valuable cards tracked

#3
1989 Fleer Ken Griffey Jr. #548
1989 Fleer Ken Griffey Jr. #548

Ungraded · Depicted team: Seattle Mariners

102 qualifying sold comps · high confidence · Aug 31, 2026

$8.24
CollectAIO Value
#5
1990 Leaf Ken Griffey Jr. #245
1990 Leaf Ken Griffey Jr. #245

Ungraded · Depicted team: Seattle Mariners

56 qualifying sold comps · high confidence · Aug 31, 2026

$5.29
CollectAIO Value
#6
1990 Topps Ken Griffey Jr. #336
1990 Topps Ken Griffey Jr. #336

Ungraded · Depicted team: Seattle Mariners

338 qualifying sold comps · high confidence · Aug 31, 2026

$4.35
CollectAIO Value
#8
1991 Topps Ken Griffey Jr. #790
1991 Topps Ken Griffey Jr. #790

Ungraded · Depicted team: Seattle Mariners

61 qualifying sold comps · high confidence · Aug 31, 2026

$2.59
CollectAIO Value
#9
1992 Topps Ken Griffey Jr. #50
1992 Topps Ken Griffey Jr. #50

Ungraded · Depicted team: Seattle Mariners

40 qualifying sold comps · high confidence · Aug 31, 2026

$2.50
CollectAIO Value

What the current Seattle Mariners data says

These observations come directly from the exact cards that pass the sold-comp, confidence, image, and freshness gates on this page.

Strongest sales evidence
493 sold comps1989 Upper Deck Ken Griffey Jr. #1
Displayed raw value range
$2.39–$105.99
Raw cards under $50 shown
10

Explore player guides represented in the Seattle Mariners rankings

What qualifies for the ranking

A row needs an exact depicted-team association, a verified image, at least four recent sold comps, medium or high confidence, and evidence refreshed within 14 days.

What this list does not claim

This is not an all-time auction record or a complete checklist of every card ever issued. It ranks the exact Seattle Mariners cards currently tracked with sufficient sold-market evidence.

Why some tracked cards are not ranked
  • missing collectaio value5
  • missing image24
  • not sold backed2