1988 Star Company Gregg Jefferies (11) Card Set Pink, New York Mets
Gregg Jefferies Game used New York Mets Home Pinstripe Baseball Jersey - Mears
Gregg Jefferies Checklist - Supercollector Catalog
Gregg Jefferies Checklist - Supercollector Catalog
Fleer – SABR's Baseball Cards Research Committee
Greg Jefferies: Late 1980's Mets Infielder (1987-1991)
Donruss and Panini – SABR's Baseball Cards Research Committee
Gregg Jefferies Checklist - Supercollector Catalog
New York Mets Game Used MLB Jerseys for sale
GREGG JEFFERIES 90 Gamer NY New York Mets 44 Jersey Mlb Baseball – Rare_Wear_Attire
David Cone Jersey - 1987 New York Mets Cooperstown Home Throwback Baseball Jersey
New York Mets David Wright Jersey With Tags