1989 Upper Deck Ken Griffey Jr Mariners PSA/DNA Auto/Signed Grade RC GEM MT 10

You’re looking at a trading card with a signature by Ken Griffey Jr.

1989 Upper Deck Ken Griffey Jr RC Auto #1 Mariners PSA/DNA Auto Grade GEM MT 10.

You’re looking at an autographed rookie card of Ken Griffey Jr. Few modern baseball cards carry the hobby significance of Griffey’s 1989 Upper Deck rookie, a card that helped define an era while introducing collectors to “The Kid” before his Hall of Fame career fully took off.

The card back captures Griffey at the very beginning of his professional ascent, noting that he was the son of major league veteran Ken Griffey, selected No. 1 by the Mariners in June 1987 out of Cincinnati’s Moeller High School, and already regarded as possibly the finest young talent Seattle had ever produced.

It also highlights his explosive early minor league production, including a .320 debut with 14 home runs at Bellingham as a 17-year-old, followed by a standout 1988 run with San Bernardino where he hit .338 with 74 hits, 28 doubles, 11 home runs, 42 RBI, and 32 stolen bases before a back injury shortened his Double-A time in Vermont.

This is the iconic 1989 Upper Deck Baseball Ken Griffey Jr. Star Rookie card #1, hand-signed boldly across the front in blue ink.

As the premier card from Upper Deck’s debut baseball release, this issue is beloved for its clean photography, premium presentation, rookie-card status, and its place as one of the defining modern baseball cards of the late 1980s.

The PSA label reads “TRADING CARD KEN GRIFFEY JR. PSA/DNA CERTIFIED AUTO GRADE GEM MT 10,” meaning the autograph has been professionally authenticated and graded a flawless GEM MT 10 by Professional Sports Authenticator/PSA DNA, while the underlying card itself is not assigned a numeric card grade on this slab.

The card and certified autograph are securely encapsulated in PSA’s tamper-evident holder for long-term protection and display.

Please see all photos regarding the condition of this item.

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