1988 Donruss #657 Gregg Jefferies NM-MT RC Rookie New York Mets - Under the Radar Sports
1983 Donruss #406 Marshall Edwards VG Milwaukee Brewers - Under the Radar Sports
Autographs – SABR's Baseball Cards Research Committee
Gregg Jefferies Gallery
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Gregg Jefferies Baseball Rookie Cards
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1983 Donruss #406 Marshall Edwards VG Milwaukee Brewers - Under the Radar Sports
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Baseball MLB 1988 Donruss #657 Gregg Jefferies NM-MT RC Rookie Mets : Collectibles & Fine Art
Autographs – SABR's Baseball Cards Research Committee
