Gregg Jefferies - Mets #1 Score 1989 Young Superstars I Baseball Card
Gregg Jefferies autographed baseball card (New York Mets) 1991 Topps #30
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1989 Topps Future Star Gregg Jefferies No.233 New York Mets Baseball Card
1989 Topps Glossy Rookies #13 Gregg Jefferies New York Mets (1988 Rookie Debut) MLB Baseball Card NM-MT : Collectibles & Fine Art
Beckett Baseball Card Monthly Nov. 1998 Jose Canseco and Gregg Jefferies covers
Gregg Jefferies autographed New York Mets Beckett Baseball back cover photo
Gregg Jefferies Baseball Cards
1992 Topps #707 Gregg Jefferies - From Factory Sealed Box - MINT
Gregg Jefferies Baseball Card Lot of 10 Cards - New York Mets Cardinal - Lot #78